Preheat the air fryer to 380°F for 3 minutes and lightly oil the basket.
Combine breadcrumbs, Parmesan, egg, onion, garlic, parsley, oregano, salt and pepper. Add turkey and fold just until evenly mixed.
Form 16 meatballs, about 1 1/2 inches each. Keep them loose rather than firmly compressed.
Set meatballs in one layer with space for airflow; cook in batches if needed.
Air fry 8 minutes, turn, then cook 2 to 4 minutes more.
Check the center of several meatballs for 165°F. Rest 5 minutes before serving.