Essential Ingredients
For the best oven baked chicken with peppers and onions, select premium ingredients to maximize flavor and nutrition. Opt for boneless, skinless chicken breasts or thighs for even cooking. Fresh bell peppers (red, yellow, and green) add sweetness and color, while thinly sliced onions provide depth. Key seasonings include olive oil, minced garlic, dried oregano, smoked paprika, salt, and freshly ground black pepper.
- Chicken: 1.5 lbs, cut into uniform pieces
- Peppers: 2 large, any color, sliced into strips
- Onions: 1 large, thinly sliced
- Olive oil: 3 tablespoons
- Garlic: 2 cloves, minced
- Seasonings: 1 tsp each of dried oregano and smoked paprika, salt and pepper to taste
Preparation Steps
Begin by preheating your oven to 400°F (200°C). In a large mixing bowl, combine chicken pieces, sliced peppers, onions, olive oil, minced garlic, and seasonings. Toss thoroughly to coat all ingredients evenly. This ensures maximum flavor infusion and prevents dryness during baking.
- Step 1: Prep vegetables: Slice peppers and onions uniformly for consistent cooking.
- Step 2: Marinate: Coat chicken and vegetables with seasonings; refrigerate for at least 15 minutes if time allows.
- Step 3: Arrange: Spread mixture in a single layer on a lined baking sheet for crispiness and even heat distribution.
Baking Instructions
Bake uncovered in the preheated oven for 25-30 minutes. Flip the chicken halfway through to avoid burning and promote browning. Check for doneness by ensuring chicken reaches an internal temperature of 165°F (74°C). Vegetables should be tender-crisp, enhancing both texture and family appeal.

- Tip: Avoid overcrowding: Use a large baking sheet to prevent steaming, which softens vegetables.
- Test for perfection: If juices run clear, and peppers are caramelized, it's ready. Rest for 5 minutes before serving.
Why Families Love It
This dish excels for busy households due to its simplicity and versatility. Baking locks in moisture for juicy chicken, while peppers and onions naturally sweeten during roasting. Serve with quinoa or rice for a complete meal. Its one-pan approach minimizes cleanup, making it a weeknight favorite that everyone enjoys.