Preheat your oven to 400°F and line a small baking sheet with parchment paper.
In a small mixing bowl, stir together the all-purpose flour, baking powder, and nonfat Greek yogurt until a soft dough forms.
Gently shape the dough into a thick biscuit and place it on the prepared baking sheet; bake for 12-15 minutes until the top is golden brown.
While the biscuit bakes, place the chicken breast between two sheets of parchment paper and pound it to an even half-inch thickness.
In a shallow dish, whisk together the buttermilk, sea salt, black pepper, paprika, and garlic powder.
Submerge the chicken breast in the seasoned buttermilk and let it marinate for 10 minutes to tenderize.
Remove the chicken from the buttermilk and dredge it in the arrowroot powder until lightly and evenly coated on both sides.
Heat the avocado oil in a non-stick skillet over medium-high heat.
Place the chicken in the hot skillet and pan-fry for 5-6 minutes per side until the crust is crispy and the internal temperature reaches 165°F.
Serve the crispy chicken breast immediately alongside the warm, fresh biscuit.