Pat dry the tilapia fingers with a kitchen towel.

Set up a breading station: one dish with all-purpose flour, one with whisked eggs mixed with mustard, and another with cornmeal, garlic powder, onion powder, celery powder, salt, and black pepper.

Dredge the fish in flour, then dip into the egg mixture, and finally coat with the cornmeal mixture, ensuring an even layer.

Cook the fish fingers in the preheated Air Fryer at 390°F for 5 minutes.

Flip the fingers over and cook for an additional 5 minutes until golden and crispy.

Serve hot with your favorite dipping sauce.

Bon appétit!