Mix olive oil with panko in a shallow dish and microwave for 60-90 seconds until lightly browned, stirring every 30 seconds. Allow to cool for a few minutes, then mix in Parmesan, basil, and oregano into the panko.
Tenderize chicken breasts by placing them on a cutting board, covering them with plastic wrap to prevent splatter, and hammering the meat with a mallet.
Scramble eggs in a bowl. Place flour and salt in a shallow dish and blend well. Begin lightly dredging each piece of chicken in flour, dipping it in egg, and then coating it with panko. Press the panko into the chicken to stick.
Spray the basket in the air fryer with nonstick cooking spray. Place a single layer of chicken into the air fryer, set to 400℉, and cook for 12-16 minutes, flipping halfway through.
Add slices of mozzarella to each piece of chicken and cook for an additional 1-2 minutes until the cheese is melted.
Once the chicken has cooked through and the cheese is melted, remove it from the air fryer and top with warmed marinara sauce.
Notes
I prefer to slice the chicken breasts in half prior to tenderizing to make them thinner and even more tender.
If you notice the panko is dry (not oily from the olive oil) and is not browning, spray the panko on the chicken breasts with cooking spray.
I prefer to add marinara sauce last because I don't like how soggy the chicken can get, especially after getting it all nice and crispy. This is personal preference. Traditionally, chicken Parmesan has sauce and then a layer of cheese on top.