1. Crank your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
2. Slice your chicken breasts into thin strips about 1/2-inch wide. Thin strips are crucial—they cook quickly and stay tender. Slice your bell peppers and onion into similar-sized thin strips so everything cooks evenly.
3. In a large bowl, combine the sliced chicken, bell peppers, onion, olive oil, chili powder, cumin, paprika, garlic powder, onion powder, salt, and pepper. Really get your hands in there and toss everything together until every piece is coated with that gorgeous spice mixture.
4. Spread the chicken and vegetable mixture on your prepared baking sheet in a single layer. Don’t pile everything in the middle—you want space between pieces for caramelization. Use two pans if needed.
5. Bake for 20-25 minutes until the chicken is cooked through (no pink remaining) and the vegetables are tender with slight char on the edges. Stir everything halfway through for even cooking.
6. While the fajitas bake, warm your flour tortillas. Wrap them in foil and stick them in the oven for the last 5 minutes, or heat them directly on a gas burner or in a dry skillet for 30 seconds per side.
7. Once everything’s done, serve the baked chicken fajitas family-style so everyone can build their own. Set out warm tortillas and all your favorite toppings—shredded cheese, sour cream, salsa, guacamole, fresh cilantro, and lime wedges.
8. Let everyone pile their fajita mixture into warm tortillas, add their favorite toppings, roll them up, and enjoy these easy, flavorful fajitas!

Nutrition Information (Per Serving, without toppings):

• Calories: 320
• Carbohydrates: 32g
• Protein: 28g
• Fat: 9g
• Fiber: 4g
• Sodium: 480mg
• Vitamin A: 35% DV (from those colorful peppers)
• Vitamin C: 140% DV (bell peppers are packed with it)
• Iron: 15% DV

These baked chicken fajitas deliver impressive protein to keep you satisfied, plus tons of vitamin C from the peppers. The fiber from vegetables and whole wheat tortillas (if you choose them) helps stabilize blood sugar.

Notes:

• Slice chicken and vegetables to similar 1/2-inch thickness for even cooking
• Don’t skimp on the olive oil—it prevents everything from drying out
• Check chicken at 20 minutes; it cooks from residual heat after removal
• Give everything space on the pan for caramelization, not steaming
• Stir halfway through cooking for even browning
• Fresh spices make a huge difference over ancient dusty jars
• Warm tortillas are essential—cold tortillas crack when you roll them

Storage Tips:

• Keep cooked chicken and vegetable mixture in an airtight container in the fridge for 4-5 days
• Store tortillas and toppings separately so nothing gets soggy
• Reheat fajita mixture in a skillet for 5-7 minutes for best texture
• Freeze the cooked mixture for up to 3 months—thaw overnight in fridge
• Don’t freeze assembled fajitas—the tortillas get weird and soggy
• This actually tastes great the next day for easy meal prep lunches

Serving Suggestions:

• As a fajita bowl: Skip the tortillas and serve over cilantro-lime rice with all the toppings
• In lettuce wraps: Use butter lettuce leaves instead of tortillas for low-carb option
• With Mexican rice: Serve alongside Spanish rice and refried beans for complete feast
• As a salad: Chop everything up and serve over romaine with avocado dressing

Mix It Up (Recipe Variations):

• Spicy Baked Chicken Fajitas: Add sliced jalapeños before baking and finish with fresh cilantro and lime juice for serious kick
• Steak Fajitas: Use thinly sliced flank steak instead of chicken—reduce cooking time to 15-18 minutes
• Shrimp Fajitas: Swap chicken for large shrimp—they only need 12-15 minutes in the oven
• Smoky Fajitas: Add smoked paprika and a touch of chipotle powder for deeper, smokier flavor

What Makes This Recipe Special:

These baked chicken fajitas deliver authentic Tex-Mex flavors without the hassle of traditional stovetop cooking. High-heat baking caramelizes the vegetables and creates those signature charred edges while keeping the chicken juicy and tender. Sheet pan dinners have revolutionized weeknight cooking because everything cooks together with minimal cleanup—this technique makes it possible to have restaurant-quality fajitas on the table in under 30 minutes without standing over a hot stove or dealing with splattering oil.