Place the chicken breast in a shallow bowl and pour the buttermilk over it, ensuring it is fully coated; let it marinate for at least 15 minutes.
In a separate small bowl, whisk together the 2 tablespoons of whole wheat flour, sea salt, black pepper, garlic powder, onion powder, and paprika.
Remove the chicken from the buttermilk, allowing excess liquid to drip off, then dredge it thoroughly in the seasoned flour mixture until coated.
Heat the avocado oil in a medium skillet over medium heat until shimmering.
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 aside to rest on a plate.
In the same skillet, whisk the remaining 1 teaspoon of flour into the leftover oil and pan drippings for 30 seconds to create a roux.
Slowly pour in the almond milk while whisking constantly until the gravy thickens into a velvety consistency.
Stir in the fresh parsley and pour the warm gravy over the chicken before serving immediately.