Preheat your air fryer to 375°F and lightly grease a waffle iron with a small amount of avocado oil.
Place 2 tablespoons of Greek yogurt in a shallow bowl and coat the chicken breast thoroughly on all sides.
In a separate bowl, whisk together the almond flour, smoked paprika, garlic powder, sea salt, and black pepper.
Press the yogurt-coated chicken into the almond flour mixture until evenly breaded, then spray lightly with avocado oil.
Air-fry the chicken for 12 to 15 minutes, flipping halfway through, until the crust is golden and the internal temperature reaches 165°F.
While the chicken cooks, whisk the oat flour, egg white, remaining 2 tablespoons of Greek yogurt, and baking powder in a bowl until smooth.
Pour the batter into the preheated waffle iron and cook until the waffle is crisp and lightly browned.
Serve the crispy chicken over the warm waffle and finish with a drizzle of maple syrup.