Use thin chicken breasts or place 2 boneless skinless chicken breasts between two pieces of parchment paper or plastic wrap and use a meat mallet or rolling pin to pound them into an even thickness.
Set up three shallow dishes. In the first dish, combine 1/2 cup all-purpose flour, 1 teaspoon salt, and 1/4 teaspoon black pepper. In the second dish, whisk 1 large egg. In the third dish, mix 1/4 cup panko bread crumbs, 1/4 cup Italian style bread crumbs, 1/2 teaspoon garlic powder, and 1/4 cup freshly grated Parmesan cheese.
Coat each chicken breast in the flour mixture, shaking off excess. Then, dip into the egg mixture, allowing excess to drip off. Last, roll in the bread crumb mixture, pressing gently to adhere. Then set aside on a plate or wire rack.
Preheat the air fryer to 400°F (200°C).
Place the breaded chicken breasts in the air fryer basket, ensuring they do not overlap. Spray lightly with Cooking oil spray to give it an even coating. Air fry for 5 minutes, then flip, spray lightly with additional cooking oil spray, and air fry for another 5 minutes.
Spoon 1/2 cup marinara sauce over the chicken breasts. Top each with two slices of mozzarella cheese, and sprinkle with 1/4 cup freshly grated Parmesan cheese.
Air fry for 2 to 3 minutes, or until the cheese is melted and bubbly and the chicken reaches an internal temperature of 165°F (75°C).
Sprinkle with 2 tablespoons chopped fresh basil and serve hot.