01 - 
                Cut mozzarella into bite-sized pieces if using block cheese; separate string cheese or use mozzarella pearls as is.
              
              
              
                02 - 
                Place flour in one shallow bowl. In a second bowl, add the beaten egg. In a third bowl, combine the plain and seasoned breadcrumbs, salt, and black pepper.
              
              
              
                03 - 
                Coat each mozzarella piece by rolling in flour, dipping in beaten egg, and covering thoroughly with the breadcrumb mixture. Ensure all sides are evenly coated.
              
              
              
                04 - 
                Preheat air fryer to 190°C. Lightly coat the basket with cooking spray. Arrange mozzarella balls in a single layer without crowding. Air fry for 5 to 6 minutes, shaking the basket halfway, until golden brown and crisp.
              
              
              
                05 - 
                Remove from the air fryer and cool briefly. Serve warm with marinara or preferred dipping sauce.