Preheat your oven to 425°F and line a baking sheet with parchment paper.
Pound the chicken breast to an even thickness if necessary.
In a shallow bowl, pour the buttermilk and season with a pinch of salt and pepper. Submerge the chicken breast and let it marinate for at least 30 minutes (or up to 2 hours in the refrigerator).
In another bowl, combine the almond flour, garlic powder, paprika, a pinch of salt, and pepper.
Remove the chicken from the buttermilk, letting the excess drip off, and then dredge it in the almond flour mixture, ensuring an even coating on all sides.
Place the coated chicken on the prepared baking sheet and spray lightly with cooking spray if desired to help with browning.
Bake in the preheated oven for 20-25 minutes or until the chicken is cooked through and the coating is crispy. Optionally, broil for 2-3 minutes at the end for extra crispiness.
Let the chicken rest for a few minutes before serving.