Preheat the air fryer to 400°F (204°C).
In a shallow bowl, whisk together the flour, garlic powder, salt, and black pepper.
In a second bowl, beat the eggs until blended.
In a third shallow bowl, combine the finely grated Parmesan and panko breadcrumbs and stir to mix evenly.
Working with two filets at a time, dredge each chicken piece in the flour mixture, shaking off excess, then dip into the beaten eggs, and press firmly into the Parmesan-panko mixture to coat both sides.
Lightly spray the air fryer basket with olive oil spray or mist; place the two coated chicken filets in a single layer without overlapping and spray the exposed tops with oil.
Air fry for 6 minutes, then flip the filets, spray the exposed side with oil, and cook for an additional 5 minutes, or until the internal temperature reaches 165°F (74°C).
Repeat the coating and cooking process with the remaining chicken filets if necessary.
Let the cooked chicken rest 5 to 10 minutes before slicing to allow juices to redistribute.
Optionally dust with extra Parmesan and serve with lemon wedges or your preferred dip.