Sheet pan chicken fajitas are the weeknight hero that gets dinner on the table with almost no effort. Sliced chicken, colorful peppers, and onions roast together in a smoky fajita seasoning, then get a squeeze of lime for a bright, juicy finish.

This easy sheet pan chicken fajitas recipe uses a homemade seasoning blend and just one pan, so cleanup is a breeze. It is also a great meal prep chicken fajitas recipe that has been a top performer among high-protein meal prep plans.

Recipe at a Glance

Prep Time	15 minutes
Cook Time	20 minutes
Total Time	35 minutes
Servings	4 servings
Category	Dinner / Meal Prep

Why You’ll Love These Sheet Pan Chicken Fajitas

One pan and about 35 minutes from start to finish
Juicy chicken and tender-crisp peppers in smoky seasoning
Easy to customize for toppings and dietary needs
Perfect for meal prep and weeknights
High in protein and full of veggies

Ingredients You’ll Need

1½ pounds boneless, skinless chicken breasts, sliced into ½-inch strips
3 bell peppers (mixed colors), sliced, and 1 large red onion, sliced
3 tablespoons olive oil
For the seasoning: 2 teaspoons chili powder, 1 teaspoon ground cumin, 1 teaspoon smoked paprika, 1 teaspoon garlic powder, 1 teaspoon salt, ½ teaspoon dried oregano, and ¼ teaspoon cayenne (optional)
Juice of 1 lime
To serve: warm tortillas, avocado, sour cream, salsa, and fresh cilantro

How to Make Sheet Pan Chicken Fajitas

Preheat the oven to 425°F (220°C) and line a large rimmed baking sheet with parchment paper.
Whisk the chili powder, cumin, paprika, garlic powder, salt, oregano, and cayenne together in a small bowl.
Toss the chicken, peppers, and onion with the olive oil and seasoning on the baking sheet until evenly coated, then spread into a single layer.
Roast for 18 to 22 minutes, stirring once halfway, until the chicken reaches 165°F (74°C) and the vegetables are tender and lightly charred.
Squeeze the lime juice over the pan and toss gently.
Serve hot in warm tortillas with your favorite toppings.

Tips for the Best Sheet Pan Fajitas

Slice the chicken and vegetables evenly so they cook at the same pace.
Use a large pan so nothing is crowded and the vegetables roast instead of steam.
Broil for 2 minutes at the end for extra char.
Squeeze the lime right before serving for bright flavor.
Use chicken thighs for even juicier fajitas.

Variations to Try: Fajita Ideas

Swap the chicken for steak or shrimp (shrimp needs only 8 to 10 minutes).
Serve over rice or in a burrito bowl.
Make them low-carb in lettuce wraps.
Add black beans or corn for extra fiber.

How to Store It

Refrigerate the cooked chicken and vegetables in an airtight container for up to 4 days. Reheat in a skillet or microwave, and add fresh toppings before serving. For meal prep, store the tortillas and toppings separately.

Frequently Asked Questions

How long do you bake chicken fajitas?

Bake at 425°F for 18 to 22 minutes, until the chicken reaches 165°F and the vegetables are tender.

Can I use chicken thighs for fajitas?

Yes. Boneless thighs are juicier and take the same amount of time.

Can I make sheet pan fajitas ahead of time?

Yes. Slice everything and season the chicken ahead, then roast when ready. Cooked fajitas also keep for 4 days.

What is the best seasoning for fajitas?

A blend of chili powder, cumin, smoked paprika, garlic powder, and oregano gives classic smoky fajita flavor.