Preparing Chicken Pizzaiola is easy if you follow these steps:

1. Prepare Chicken: Begin by seasoning the chicken breasts with salt and pepper on both sides.
2. Heat Oil: In a large skillet, heat olive oil over medium heat.
3. Cook Chicken: Add the chicken breasts to the skillet and cook for about 5–7 minutes on each side, or until browned and cooked through. Remove from the skillet and set aside.
4. Sauté Onions and Garlic: In the same skillet, add the chopped onion and cook until soft. Add minced garlic and cook for another minute.
5. Add Tomatoes: Stir in the crushed tomatoes and tomato paste, mixing well.
6. Season Sauce: Add oregano, basil, salt, and pepper to taste. Let the sauce simmer for about 5 minutes to allow the flavors to meld.
7. Return Chicken: Place the cooked chicken back into the skillet, spooning sauce over each piece.
8. Add Cheese: If using, sprinkle shredded mozzarella cheese on top of the chicken.
9. Cover and Simmer: Cover the skillet and let it simmer for an additional 5 minutes, or until the cheese is melted.
10. Garnish and Serve: Once done, garnish with fresh basil leaves before serving.

These steps will guide you through making this incredible dish effortlessly, ensuring a meal that your family will adore!