Preheat your air fryer to 400°F and lightly coat the basket with avocado oil.
Slice the chicken breast into even strips and soak them in the buttermilk for 10 minutes.
In a shallow bowl, whisk together the almond flour, nutritional yeast, garlic powder, smoked paprika, sea salt, and black pepper.
Remove each chicken strip from the buttermilk and dredge in the almond flour mixture, pressing firmly to ensure an even coating.
Place the coated chicken in the air fryer basket and cook for 10 to 12 minutes, flipping halfway through, until the exterior is golden and the chicken is cooked through.
While the chicken cooks, whisk together the oat flour, Greek yogurt, egg white, and baking powder in a small bowl until a smooth batter forms.
Pour the batter into a preheated waffle iron and cook until the waffle is crisp and lightly browned.
Place the warm waffle on a plate, top with the crispy chicken strips, and finish with a drizzle of pure maple syrup.