01 - Preheat oven to 400°F.
02 - Pat the chicken breasts dry with a paper towel. Rub both sides with 1 tbsp olive oil, smoked paprika, oregano, salt, and black pepper until evenly coated.
03 - In a large oven-safe skillet or baking dish, toss the sliced red and yellow bell peppers, onion, and minced garlic with the remaining 1 tbsp olive oil, a pinch of salt, and chili flakes if using. Spread the vegetables in an even layer across the bottom of the pan.
04 - Place the seasoned chicken breasts on top of the bed of vegetables in the skillet or baking dish.
05 - Roast in the preheated oven for 20 to 25 minutes, until the chicken reaches an internal temperature of 165°F and the vegetables are tender.
06 - Remove from the oven and let rest for 3 to 5 minutes. Garnish with chopped fresh parsley and serve with lemon wedges.