Preheat the air fryer to 375°F and lightly grease the basket.
Place the chicken breast in a bowl with buttermilk and let it soak for 15 minutes to tenderize.
In a shallow dish, whisk together the almond flour, arrowroot, garlic powder, onion powder, paprika, sea salt, and black pepper.
Remove the chicken from the buttermilk and dredge it thoroughly in the flour mixture, pressing to adhere, then mist with avocado oil.
Air fry the chicken for 12 to 15 minutes, flipping halfway through, until the exterior is golden and the internal temperature reaches 165°F.
In a separate bowl, stir together the oat flour, baking powder, Greek yogurt, and melted ghee until a soft dough forms.
Scoop the biscuit dough onto a parchment-lined tray and bake at 375°F for 10 minutes until puffed and lightly browned.