Place the chicken breast in a shallow bowl and pour the buttermilk over it, allowing it to marinate for at least 20 minutes.
In a separate bowl, combine the whole wheat panko, garlic powder, onion powder, sea salt, and black pepper.
Remove the chicken from the buttermilk and dredge it through the panko mixture, pressing firmly to ensure the coating adheres to all sides.
Preheat your air fryer to 375°F and lightly spray the basket with avocado oil.
Place the chicken in the basket and air fry for 12 to 15 minutes, flipping halfway through, until the exterior is golden and the internal temperature reaches 165°F.
While the chicken cooks, melt the ghee in a small saucepan over medium heat and whisk in the arrowroot powder to form a paste.
Slowly pour in the almond milk while whisking constantly to prevent lumps, then stir in the dried thyme.
Simmer the gravy for 2 to 3 minutes until thickened and smooth.
Serve the crispy chicken immediately with the warm gravy drizzled over the top.