To make the Crispy Air Fryer Chicken Parmesan, follow these easy steps:

1. Prepare Chicken: Place the chicken breasts between two sheets of plastic wrap and pound them to an even thickness (about ½ inch).
2. Set Up Breading Station: In one bowl, whisk the egg. In another bowl, mix the breadcrumbs, Parmesan cheese, garlic powder, onion powder, Italian seasoning, salt, and pepper.
3. Coat Chicken: Dip each chicken breast into the egg, allowing excess to drip off. Next, coat both sides with the breadcrumb mixture.
4. Preheat Air Fryer: Preheat your air fryer to 400°F (200°C) for about 5 minutes.
5. Air Fry Chicken: Place the breaded chicken breasts in the air fryer basket. Spray lightly with olive oil. Cook for 8-10 minutes, flipping halfway through.
6. Add Sauce and Cheese: After flipping, add ½ cup of marinara sauce to each chicken breast, followed by a generous sprinkle of mozzarella cheese.
7. Finish Cooking: Return the chicken to the air fryer and cook for an additional 5 more minutes, or until the cheese is melted and bubbly.
8. Garnish: Carefully remove the chicken from the air fryer. Let it rest for a few minutes before serving. Garnish with fresh basil if desired.

These simple steps ensure that your chicken turns out perfectly crispy and full of flavor!