Pound the chicken breast to an even half-inch thickness to ensure even cooking.
Place the chicken in a shallow bowl and pour the buttermilk over it, letting it marinate for at least 15 minutes.
In a separate wide dish, whisk together the 3 tablespoons of flour, smoked paprika, garlic powder, onion powder, sea salt, and black pepper.
Remove the chicken from the buttermilk, letting the excess drip off, then dredge thoroughly in the seasoned flour mixture.
Heat the avocado oil in a large skillet over medium heat until shimmering.
Add the chicken to the pan and cook for 5-6 minutes per side until the coating is golden brown and the internal temperature reaches 165 degrees Fahrenheit.
Remove the chicken from the pan and set aside on a plate.
To the same pan, whisk the remaining teaspoon of flour into the residual oil for 1 minute, then slowly pour in the almond milk.
Simmer the gravy until thickened, scraping up any browned bits from the pan, then pour over the crispy chicken to serve.