Preheat your air fryer to 375 degrees F and line a small baking tray with parchment paper.
In a small bowl, combine the oat flour, Greek yogurt, and baking powder, stirring until a soft dough forms.
Gently shape the dough into one round biscuit and place it in the air fryer to cook for 10-12 minutes until golden.
While the biscuit cooks, slice the chicken breast into thick strips and dip each piece into the buttermilk.
In a shallow dish, whisk together the almond flour, arrowroot starch, sea salt, black pepper, garlic powder, and paprika.
Dredge the buttermilk-soaked chicken in the flour mixture, pressing firmly to ensure an even, thick coating.
Lightly mist the chicken with avocado oil and air fry at 375 degrees F for 12-15 minutes, flipping halfway, until the exterior is crunchy and golden.
Serve the crispy chicken immediately alongside the warm biscuit for a wholesome, high-protein comfort meal.