Place the chicken breast between two sheets of parchment paper and pound to an even half-inch thickness for uniform cooking.
Submerge the chicken in the buttermilk in a shallow bowl and let it marinate for at least 15 minutes to tenderize.
In a separate shallow dish, whisk together the almond flour, one tablespoon of arrowroot starch, garlic powder, onion powder, sea salt, and black pepper.
Remove the chicken from the buttermilk, allowing the excess to drip off, and dredge it thoroughly in the flour mixture until fully coated.
Heat the avocado oil in a large skillet over medium-high heat and fry the chicken for 5 to 6 minutes per side until the crust is golden brown.
Remove the chicken to a warm plate and discard the excess oil while keeping the flavorful browned bits in the skillet.
Add the ghee to the skillet over medium heat, then whisk in the almond milk, the remaining teaspoon of arrowroot starch, and the dried thyme.
Simmer the gravy for 2 minutes until it reaches a silky consistency, then pour it over the fried chicken and serve immediately.