Preheat your oven to 425°F.
In a shallow bowl, combine the buttermilk with salt, pepper, garlic powder, and paprika.
Place the chicken breast in the buttermilk marinade ensuring it is well coated. Allow it to marinate for at least 30 minutes (or up to 2 hours in the refrigerator).
After marination, transfer the chicken to another plate and sprinkle almond flour evenly on both sides to form the crispy coating.
Place the coated chicken on a baking sheet lined with parchment paper.
In a mixing bowl, toss the fresh green beans with olive oil, salt, and pepper.
Arrange the green beans around the chicken on the baking sheet.
Bake for 20-25 minutes, or until the chicken is cooked through and the coating is lightly crispy. The green beans should be tender and slightly charred on the edges.
Remove from the oven, let rest for a few minutes, and serve warm.