Preheat your air fryer to 400°F and grease a waffle iron with the avocado oil.
Slice the chicken breast into even strips and place them in a bowl.
Toss the chicken with arrowroot powder, garlic powder, onion powder, sea salt, and black pepper until every piece is thoroughly coated.
Place the chicken in the air fryer basket in a single layer and cook for 10-12 minutes, flipping halfway, until the coating is golden and crispy.
While the chicken cooks, whisk together the oat flour, Greek yogurt, egg white, and baking powder in a small bowl to create a thick waffle batter.
Pour the batter into the preheated waffle iron and cook until the waffle is firm and lightly browned.
Place the hot waffle on a plate, top with the crispy chicken strips, and finish with a drizzle of pure maple syrup.