Preheat your air fryer to 400°F for a quick and efficient cooking process.
Cut the chicken breast into uniform bite-sized pieces to ensure even browning.
Whisk the egg in a small bowl until smooth to create a binding base for the coating.
In a separate shallow dish, whisk together the almond flour, arrowroot powder, garlic powder, onion powder, sea salt, and black pepper.
Dip each chicken piece into the whisked egg, then roll in the flour mixture until every side is thoroughly coated.
Lightly brush the chicken bites with avocado oil to help achieve that signature crispy texture.
Arrange the bites in the air fryer basket in a single layer and cook for 10 minutes until they are firm and golden.
Stir the Greek yogurt and Dijon mustard together in a small container to create a creamy, high-protein dipping sauce.