Prep the chicken: Pat the chicken dry with paper towels and cut into bite-size pieces.
Dry chicken helps the coating stick and crisp.
Set up your breading station: In one bowl, beat the eggs. In a second bowl, mix panko, Parmesan, cornstarch, salt, pepper, paprika, and garlic powder.
Coat the chicken: Dip each piece into the egg, let the excess drip off, then press into the panko mixture until well coated. Place on a plate or rack as you work.
Choose your cooking method: Preheat the oven to 425°F (220°C) or preheat your air fryer to 400°F (205°C).
Line a baking sheet with parchment and set a wire rack on top if baking. This helps air circulate for even crisping.
Add a little oil: Toss or lightly spray the coated chicken with olive oil. A thin layer makes a big difference in color and crunch.
Bake or air-fry: Oven: Arrange chicken on the rack in a single layer.
Bake for 12–15 minutes, flipping halfway, until golden and the internal temperature hits 165°F (74°C).
Air fryer: Cook in batches for 8–10 minutes, shaking or flipping halfway, until crisp and cooked through.
Make the garlic-butter finish: In a small skillet, melt the butter over low heat. Add the minced garlic and cook for 30–60 seconds until fragrant, not browned. Stir in the olive oil and a pinch of salt.
Toss and finish: Place hot chicken bites in a bowl, drizzle with the garlic-butter mixture, and toss.
Sprinkle with extra Parmesan and parsley. Add a squeeze of lemon right before serving.
Serve: Enjoy immediately with your favorite dip or over a crisp salad.