Prep the chicken: If using chicken breasts, slice into even strips about 1-inch wide.
Pat dry with paper towels. This helps the coating stick.
Make the high-protein marinade: In a bowl, whisk the Greek yogurt, egg, Dijon, and hot sauce. Season with a pinch of salt and pepper.
Add the chicken and toss to coat. Let it sit for 15–30 minutes in the fridge.
Mix the coating: In a shallow dish, combine panko, Parmesan, smoked paprika, garlic powder, onion powder, 1/2 teaspoon salt, and black pepper. Stir well so the spices are evenly distributed.
Preheat the air fryer: Set to 400°F (200°C) for 5 minutes.
A hot basket jump-starts the crisping.
Coat the tenders: Working one piece at a time, lift chicken from the marinade, let excess drip off, then press into the panko mixture. Pack the crumbs on all sides for a solid crust.
Arrange and spray: Lightly spray the air fryer basket with oil. Place tenders in a single layer with a little space between each.
Spray the tops with oil to help the crust brown. You may need to cook in batches.
Air fry until golden: Cook at 400°F (200°C) for 9–12 minutes, flipping halfway and spraying again. Tenders are done when the crust is deep golden and the internal temperature hits 165°F (74°C).
Season and rest: Sprinkle with a pinch of salt right out of the air fryer.
Let rest 2–3 minutes so the juices settle.
Serve: Add a squeeze of lemon and a sprinkle of herbs if you like. Pair with a simple salad, roasted veggies, or sweet potato wedges.