Place the chicken breast in a shallow bowl and pour the buttermilk over it, ensuring it is fully coated.
In a separate small bowl, whisk together the whole wheat flour, garlic powder, onion powder, paprika, sea salt, and black pepper.
Remove the chicken from the buttermilk, letting the excess drip off, then dredge thoroughly in the flour mixture.
Heat the avocado oil in a non-stick skillet over medium heat and cook the chicken for 5-6 minutes per side until the exterior is golden and the internal temperature reaches 165°F.
Remove the chicken from the pan and set aside to rest.
In the same skillet, whisk together the unsweetened almond milk and arrowroot powder, scraping up any browned bits from the bottom of the pan.
Simmer the gravy for 2 minutes until thickened, stir in the fresh parsley, and pour over the crispy chicken.