Place the chicken breast in a small bowl with the buttermilk and let marinate for 20 minutes to tenderize.
In a shallow dish, whisk together the almond flour, arrowroot starch, garlic powder, onion powder, sea salt, and black pepper.
Remove the chicken from the buttermilk, allowing any excess to drip off, and dredge it thoroughly through the seasoned flour mixture until fully coated.
Heat the avocado oil in a non-stick skillet over medium heat.
Add the chicken to the skillet and cook for 5-7 minutes per side, or until the internal temperature reaches 165°F and the crust is golden brown.
Remove the chicken from the pan and set aside to rest.
In the same pan over medium-low heat, whisk in the chicken bone broth and heavy cream, scraping up any browned bits from the bottom.
Simmer the sauce for 3-4 minutes until it thickens into a creamy gravy.
Plate the chicken, pour the gravy over the top, and garnish with freshly chopped parsley.