Preheat your oven to 350°F and line a small baking sheet with parchment paper.
In a small mixing bowl, combine 2 tablespoons of almond flour, the Greek yogurt, baking powder, and a pinch of sea salt to form a soft dough.
Shape the dough into a tall round biscuit and place it on the baking sheet, then bake for 12 to 15 minutes until the top is golden and firm.
While the biscuit bakes, place the chicken breast in a shallow bowl and coat it thoroughly with the buttermilk.
In another shallow dish, whisk together the remaining 2 tablespoons of almond flour, arrowroot starch, garlic powder, onion powder, paprika, 0.25 tsp sea salt, and black pepper.
Remove the chicken from the buttermilk and press it firmly into the flour mixture until it is completely and evenly coated.
Heat the avocado oil in a non-stick skillet over medium heat until shimmering.
Carefully place the chicken in the skillet and cook for 5 to 6 minutes per side until the crust is golden brown and the chicken reaches an internal temperature of 165°F.
Serve the crispy chicken immediately alongside the warm, fresh-baked biscuit.