Preheat your oven to 400°F and line a small baking sheet with parchment paper.
In a small mixing bowl, whisk together 3 tbsp of whole wheat flour, baking powder, and a pinch of sea salt.
Add the Greek yogurt to the flour mixture and stir until a soft dough forms, then shape it into a round biscuit.
Place the biscuit on the baking sheet and bake for 12 to 15 minutes until it is lightly browned and firm.
While the biscuit bakes, place the chicken breast in a shallow bowl and pour the buttermilk over it to coat.
In another shallow dish, combine the remaining 2 tbsp of flour with paprika, garlic powder, sea salt, and black pepper.
Remove the chicken from the buttermilk, letting excess drip off, and dredge it thoroughly in the seasoned flour.
Heat the avocado oil in a skillet over medium-high heat and fry the chicken for 5 to 6 minutes per side until golden and cooked through.
Serve the crispy buttermilk chicken immediately alongside the warm, fluffy biscuit.