Place 2 cm thick diced bell peppers, diced onions, lemon slices, and cherry tomatoes in a baking dish.
In a separate bowl mix finely chopped garlic, olive oil, paprika, and oregano.
Pour a third of the sauce over the vegetables. Season with salt and pepper and mix well to spread the sauce evenly over the vegetables.
Put the pieces of chicken fillet on the vegetables, and pour with the remaining sauce.
Put it in an oven heated to 200°C and bake for 25 minutes.
After 25 minutes, remove, and add olives and feta. Bake again for 5-10 minutes.Bon Appetit!