Prep the chicken: Pat the chicken tenders dry with paper towels. If using breast strips, aim for even thickness so they cook at the same rate.
Set up the coating station: In one shallow bowl, combine the gluten-free flour with 1/2 teaspoon salt and a pinch of pepper. In a second bowl, whisk the eggs with water.
In a third bowl, mix the gluten-free panko with garlic powder, onion powder, smoked paprika, dried oregano (if using), remaining 1/2 teaspoon salt, and black pepper.
Bread the chicken: Work one piece at a time. Dredge in the seasoned flour, shaking off excess. Dip in egg wash, letting extra drip off.
Press into the panko mixture, coating all sides. Set on a plate or rack. Repeat with remaining pieces.
Rest the coated tenders: Let them sit for 5–10 minutes.
This helps the coating adhere and crisp better in the air fryer.
Preheat the air fryer: Heat to 400°F (200°C) for 3–5 minutes. A hot basket helps prevent sticking and promotes browning.
Load the basket: Lightly spray the air fryer basket with oil. Arrange tenders in a single layer with slight space between them.
Lightly spray the tops of the tenders, too. Cook in batches if needed.
Air fry: Cook at 400°F for 6 minutes. Flip, spray again lightly, and cook another 5–7 minutes until internal temp reaches 165°F and the coating is golden and crisp.
Season and serve: Sprinkle with a pinch of salt while hot.
Rest 2 minutes to set the crust. Serve with lemon wedges and your favorite dip.