• Preheat the air fryer to 360°F (182°C).
• In a shallow dish: combine breadcrumbs, parmesan cheese and mix well. In a separate dish, whisk the eggs.
• Clean and slice the chicken in half lengthwise (4 filets). Optional: Use a meat pounder to tenderize the each chicken to an even ⅓" thick. 
• Drench the chicken breast into the eggs and then coat with the parmesan mixture all over. Depending on the size of your air fryer, you may need to do this in batches.
• Coat the bottom of the air fryer with olive oil cooking spray. Transfer the chicken to the air fryer. Coat the top with cooking spray.
• Air fry for 6 minutes. Flip the chicken, add 2 tbsp marinara sauce and 2 tbsp mozzarella cheese to each breast. Air fry for 4-5 minutes or until the cheese has melted.

Serve with pasta, vegetables or salad. Enjoy!