Preheat your oven to 425°F and line a large baking sheet with parchment paper for easy cleanup. This temperature ensures chicken cooks through while vegetables achieve perfect caramelization without drying out.
In a small bowl, whisk together chili powder, cumin, paprika, garlic powder, onion powder, salt, and black pepper. Add lime juice and olive oil, stirring until the mixture forms a paste-like consistency for maximum flavor distribution.
Place chicken pieces on the prepared baking sheet, then pour half the seasoning mixture over top. Toss chicken until completely coated, then push to one side of the pan for your hands off summer dinner preparation.
Arrange sliced bell peppers and onion on the remaining sheet pan space, then drizzle with the remaining seasoning mixture. Toss vegetables thoroughly to coat, creating distinct zones so nothing steams together during cooking.
Bake for 25 minutes, checking halfway through to ensure chicken reaches 165°F internally and vegetables soften slightly. Sheet pan fajitas family summer recipe comes together beautifully when timing remains precise and oven temperature stays consistent.
Remove from oven and sprinkle fresh cilantro over the entire pan, letting the residual heat release its aromatic oils. The fresh herb elevates everything from simple to spectacular in seconds flat.
Warm tortillas in the microwave wrapped in a damp kitchen towel for 1-2 minutes until pliable. Serve everything family-style, letting everyone build their own fajita with preferred toppings.