Slice the chicken breast into even strips and place them in a shallow bowl with the buttermilk to marinate for at least 20 minutes.
In a separate wide dish, whisk together the whole wheat flour, cornstarch, garlic powder, onion powder, sea salt, black pepper, and smoked paprika.
Remove each chicken strip from the buttermilk, letting the excess drip off, then dredge thoroughly in the flour mixture until fully coated.
Preheat your air fryer to 400°F. Lightly brush or spray the chicken strips with avocado oil to ensure a crispy exterior.
Place the chicken in the air fryer basket in a single layer and cook for 12-15 minutes, flipping halfway through, until the internal temperature reaches 165°F and the coating is golden brown.
While the chicken cooks, melt the ghee in a small saucepan over medium heat. Whisk in the arrowroot powder to create a paste.
Slowly pour in the almond milk while whisking constantly to prevent lumps. Add the dried thyme and a pinch of salt and pepper.
Continue to simmer and whisk the gravy until it thickens to a velvety consistency, then serve immediately over the crispy chicken.