Place the chicken breast in a bowl and cover with buttermilk, letting it marinate for at least 15 minutes.
In a shallow dish, whisk together the almond flour, one tablespoon of arrowroot starch, garlic powder, onion powder, smoked paprika, sea salt, and black pepper.
Remove the chicken from the buttermilk, allowing excess to drip off, then dredge thoroughly in the flour mixture until fully coated.
Heat the avocado oil in a large skillet over medium-high heat.
Add the chicken to the skillet and cook for 5-7 minutes per side until the crust is crispy and the internal temperature reaches 165 degrees Fahrenheit.
Remove the chicken from the pan and set aside to rest.
In the same pan, whisk together the almond milk and the remaining teaspoon of arrowroot starch, scraping up any browned bits from the bottom.
Simmer the gravy for 2-3 minutes until thickened, then pour over the crispy chicken and serve immediately.