Preheat your oven to 400°F (200°C). Line a sheet pan with parchment paper for easy cleanup if desired.
In a large mixing bowl, combine the chicken breasts, broccoli, baby carrots, and sliced bell peppers.
Drizzle the olive oil over the chicken and vegetables. Sprinkle with garlic powder, Italian seasoning, paprika, salt, and black pepper. Toss everything until well coated.
Spread the chicken and veggies in a single layer on the prepared sheet pan. Make sure there is some space between each piece for even roasting.
Place the sheet pan in the preheated oven and roast for 25-30 minutes, or until the chicken is cooked through (internal temperature should reach 165°F or 75°C) and the vegetables are tender.
Remove the pan from the oven and let it rest for a few minutes before serving. Serve with lemon wedges if desired for an extra burst of flavor.
For customization, consider substituting your favorite vegetables like zucchini, asparagus, or potatoes.