In separate shallow bowls: add flour to one; beat eggs, garlic, 2 tbsp water, and 3/4 tsp salt in another; and in the third, mix panko with 1/3 cup Parmesan and toss with olive oil.
Pound chicken cutlets to even thickness. Toss with lemon juice. Dredge each cutlet in flour, dip in egg mixture, then press into panko mix to coat.
Preheat air fryer to 360°F. Brush basket with oil. Air-fry 2 cutlets at a time for 6 minutes, flip, then cook for 7–9 more minutes until golden and internal temp hits 165°F.
Top cooked cutlets with 4 tbsp marinara, 1 tbsp basil, mozzarella, and remaining Parmesan. Increase fryer temp to 400°F. Cook 2–3 minutes until cheese is melted and golden.
Repeat for remaining cutlets. Garnish with additional fresh basil before serving.