Place chicken breast in a bowl with buttermilk, garlic powder, and smoked paprika to marinate for 20 minutes.
Combine arrowroot powder, almond flour, sea salt, and black pepper in a shallow dish.
Remove chicken from buttermilk, dredge in the flour mixture until coated, and mist with avocado oil.
Air fry the chicken at 400°F for 12-15 minutes until the exterior is golden and the internal temperature reaches 165°F.
While chicken cooks, blend oats, Greek yogurt, egg white, and baking powder in a high-speed blender until smooth.
Pour batter into a preheated waffle iron and cook until the waffle is golden brown and slightly crisp.
Serve the crispy chicken on top of the warm waffle and finish with a drizzle of pure maple syrup.