Place the chicken breast in a shallow bowl and pour the buttermilk over it, ensuring it is fully coated.
In a separate small dish, whisk together the 2 tablespoons of whole wheat flour, garlic powder, onion powder, smoked paprika, sea salt, and black pepper.
Remove the chicken from the buttermilk, letting the excess drip off, and dredge it thoroughly in the seasoned flour mixture.
Heat the avocado oil in a medium skillet over medium-high heat until shimmering.
Carefully place the chicken in the skillet and cook for 5-6 minutes per side, or until the exterior is golden brown and the internal temperature reaches 165 degrees Fahrenheit.
Remove the chicken from the pan and set it aside to rest on a plate.
Wipe out any excess oil from the skillet, then add the ghee and melt it over medium heat.
Whisk in the remaining teaspoon of flour to create a roux, cooking for 1 minute until slightly toasted.
Gradually whisk in the milk and dried thyme, simmering until the gravy thickens into a creamy consistency.
Serve the chicken immediately with the warm gravy poured over the top.