Prep the chicken: Pat the chicken pieces dry with paper towels.
This helps the coating stick and keeps the nuggets from steaming.
Set up the dredging stations: In one shallow bowl, whisk together flour and cornstarch. In a second bowl, beat the eggs with the milk. In a third bowl, mix panko, fine breadcrumbs, salt, pepper, garlic powder, onion powder, paprika, and cayenne.
Coat the chicken: Working in batches, toss the chicken in the flour mixture, shaking off extra.
Dip into the egg, then press into the breadcrumb mixture until fully coated. Place coated pieces on a plate.
Preheat the air fryer: Set to 400°F (200°C) for 3 minutes. A hot basket helps the nuggets crisp fast.
Oil and arrange: Lightly spray the air fryer basket.
Add nuggets in a single layer with a little space between. Lightly mist the tops with oil. Don’t crowd the basket—work in batches if needed.
Air fry: Cook at 400°F (200°C) for 8–10 minutes, flipping halfway and giving another light spray after flipping.
Nuggets are done when golden brown and the internal temp hits 165°F (74°C).
Season and serve: Sprinkle with a pinch of salt right as they come out. Serve hot with your favorite dipping sauces and a squeeze of lemon if you like.