Easy Healthy Sheet Pan Chicken Fajitas

These Sheet Pan Chicken Fajitas are one of our favorite dinners to make. Made with all simple and healthy ingredients and you do all the cooking in one pan! This recipe is gluten-free, dairy-free and such an easy dinner idea.

If there’s one dinner that never fails in my house, it’s these Sheet Pan Chicken Fajitas. They are one of those family meals that somehow checks every single box — easy to make, minimal cleanup, packed with flavor, and totally customizable. Whether it’s a busy weeknight or a lazy Sunday, this recipe has become a go-to that I can make with my eyes closed. And best of all? Everyone actually eats it.

Even my boys, who don’t love peppers yet (I know, we’ll get there!), happily build their own fajita wraps with warm tortillas, juicy chicken, and a big scoop of guacamole. The rest of us go all in – loading up on peppers, onions, salsa, cilantro, and whatever else we have around. It’s one of those dinners where everyone’s plate looks a little different, but everyone’s satisfied. No battles, no complaints – just full bellies and happy faces.

Why You’ll Love These Sheet Pan Fajitas

There are a million reasons to love a sheet pan dinner, but fajitas take things to a new level. Everything cooks together in the oven – juicy chicken, sweet bell peppers, caramelized onions – so you’re left with tender, flavorful ingredients and almost zero mess.

The prep is truly minimal. Slice up your veggies, toss everything on a sheet pan, drizzle with oil, sprinkle the spices, and let the oven do the rest. While it bakes, you can warm tortillas, whip up some guacamole, or even make a batch of cilantro lime rice to go on the side.

It’s foolproof, family-approved, and made with simple ingredients that you likely already have on hand. Once you try it, I promise it’ll become one of those dinners you make again and again.

What ingredients you need to make these chicken fajitas:

• Bell peppers: Use a mix of colors – red, yellow, green – sliced into ½-inch strips. They roast beautifully and add natural sweetness.

• White onion: Also sliced into ½-inch pieces. When roasted, it becomes caramelized and slightly crisp.

• Chicken thighs: I love using thighs because they stay juicy and flavorful. You can use boneless or bone-in, skin-on – either works great. The cook time is about the same and depends on the size of your pieces.

• Avocado oil: Perfect for roasting at high heat. Olive oil works too if that’s what you have.

• Spices: A simple but bold mix of cumin, paprika, chili powder, and garlic powder gives these fajitas that classic smoky kick.

• Tortillas: Use your favorite – regular flour, corn, or gluten-free tortillas. We often use almond flour tortillas in our house.

• Toppings: Guacamole, chopped cilantro, salsa, lime wedges, shredded cheese, or sour cream (or Greek yogurt if you want extra protein).

How to make sheet pan chicken fajitas:

1. Preheat oven to 425 degrees F
2. Add peppers, onions and chicken to baking sheet (if it doesn’t all fit, use 2 sheets)
3. Drizzle oil across and then combine spices in small bowl and sprinkle across
4. Using clean hands or meat handling gloves, mix everything all together. If cooking skin-on chicken, cook skin side up
5. Bake in oven for 30 minutes or until chicken reaches internal temperature of 165 degrees F
6. Once ready, serve with warmed tortillas, chicken, peppers and onions and any desired toppings like guacamole, salsa and cilantro

Easy Add-Ons and Customizations

One of the best parts about sheet pan fajitas is how adaptable they are. You can switch things up depending on what you have in your fridge or what your family loves most.

• Add more veggies: Zucchini, mushrooms, or cherry tomatoes roast beautifully alongside the peppers.

• Switch up the protein: Try shrimp or steak fajitas for a new twist. Shrimp cooks quickly, so add it halfway through the baking time. Steak can cook the full 30 minutes depending on thickness.

• Make it vegetarian: Skip the chicken and use black beans, chickpeas, or cubed sweet potatoes. They’ll soak up all the seasoning and taste incredible.

• Add rice or quinoa: Turn your fajitas into burrito bowls by serving them over a bed of rice or quinoa with extra toppings.

Tips for the Best Sheet Pan Fajitas

✅ Cut your veggies evenly. Keeping everything about the same size ensures it all cooks at the same rate.

✅ Don’t overcrowd the pan. If the chicken and veggies are piled too high, they’ll steam instead of roast. Use two sheet pans if needed.

✅ Use high heat. Roasting at 425°F helps the peppers caramelize and gives you those perfect charred edges.

✅ Warm your tortillas. Heat them directly over a gas burner for a few seconds or wrap them in foil and warm in the oven. It makes a big difference!

✅ Prep ahead. Slice your veggies and season your chicken in the morning or the night before. Store everything in the fridge so you can just toss and bake when it’s dinnertime.

FAQs About Sheet Pan Fajitas

How can I make these vegetarian or vegan?
Super easy — just skip the chicken! Use black beans, chickpeas, or sweet potato cubes instead. You’ll still get all the same amazing fajita flavors.

Can I use another meat?
Absolutely. Steak and shrimp both work perfectly in this recipe. For steak, slice it into strips and bake the full 30 minutes. For shrimp, bake everything else first for 20 minutes, then add the shrimp for the last 10 minutes.

What tortillas do you use?
We love almond flour tortillas for a gluten-free option, but any kind works. Corn tortillas are classic, and flour tortillas hold up really well if you’re loading them up with toppings.

Can I meal prep these fajitas?
Yes! These are amazing for meal prep. You can roast everything, then store it in the fridge for up to 4 days. Reheat in a skillet or the microwave and serve with fresh tortillas or rice.

How do you reheat sheet pan fajitas?
I usually warm them up in a skillet to get the veggies a little crisp again, but the microwave works great too when you’re short on time.

Can I freeze the leftovers?
You can! Store cooled fajita mix in a freezer-safe bag or container for up to 2 months. Defrost overnight and reheat in a skillet when ready to serve.

Why Sheet Pan Fajitas Are Perfect for Family Dinners

As a mom, I live for meals that make everyone happy — and these sheet pan fajitas do exactly that. They’re colorful, interactive, and easy to build just how you like them. My kids love that they can pick and choose what goes on their tortillas, and I love that I can pack in the veggies without anyone complaining.

It’s also one of those dinners that feels a little fun. Everyone builds their own fajita, adds guac, a little salsa, maybe some cheese — and it feels like a restaurant night at home.

Plus, cleanup is a breeze. One sheet pan, one cutting board, and maybe a bowl or two for toppings. That’s it. No pile of dishes or pots and pans to wash after dinner.

A Few Favorite Pairings

If you want to make this meal a little more special, try pairing your fajitas with:

• Cilantro Lime Rice: Cook up some rice and toss with fresh lime juice, chopped cilantro, and a pinch of salt.

• Homemade Guacamole: Mash avocado with lime juice, salt, garlic powder, and diced tomato.

• Simple Salsa: Combine diced tomatoes, onion, cilantro, lime, and salt for a quick fresh salsa.

• Roasted Corn or Black Beans: Add a scoop on the side for extra fiber and flavor.

When I say these Sheet Pan Fajitas are one of our family’s all-time favorite meals, I mean it. They’re simple, wholesome, and incredibly delicious — everything you want in a weeknight dinner. The prep takes just minutes, the oven does all the work, and you’re rewarded with perfectly roasted chicken and veggies bursting with flavor.

Whether you’re feeding picky eaters or cooking for a crowd, these fajitas are a guaranteed win. Customize them to your liking, pile on your favorite toppings, and enjoy a dinner that everyone at the table will love — no complaints, no stress, just really good food.

Let me know if you try these out – I can’t wait to hear what you think!

A few other delicious sheet pan recipes:

Buffalo Chicken Sheet Pan Quesadilla

Sheet Pan Grilled Cheese

Sheet Pan Lasagna (gluten-free)

Healthy Sheet Pan Sausage Dinner (Whole30)