Place the chicken breast in a shallow bowl and cover with buttermilk, letting it marinate for at least 15 minutes.
In a separate shallow dish, whisk together the almond flour, arrowroot powder, garlic powder, onion powder, smoked paprika, sea salt, and black pepper.
Remove the chicken from the buttermilk, allowing excess to drip off, then dredge thoroughly in the almond flour mixture until evenly coated.
Heat the avocado oil in a medium skillet over medium heat.
Add the chicken to the skillet and cook for 5-6 minutes per side, or until the crust is golden brown and the internal temperature reaches 165 degrees Fahrenheit.
Remove the chicken from the pan and set aside to rest.
In the same skillet, whisk in the chicken bone broth and heavy cream, scraping up any browned bits from the bottom of the pan.
Simmer the sauce for 3-4 minutes until it thickens into a creamy gravy, then stir in the fresh thyme.
Slice the chicken and serve immediately with the warm gravy poured over the top.