Place the chicken breast between two sheets of parchment paper and pound to an even half-inch thickness.
Submerge the chicken in the buttermilk in a shallow bowl and let it marinate for at least 30 minutes in the refrigerator.
In a separate shallow dish, whisk together the 2 tablespoons of flour, sea salt, black pepper, garlic powder, onion powder, and paprika.
Remove the chicken from the buttermilk, allowing excess to drip off, then dredge thoroughly in the flour mixture until fully coated.
Heat the avocado oil in a heavy-bottomed skillet over medium heat.
Carefully place the chicken in the skillet and sear until the crust is golden brown and the internal temperature reaches 165°F, about 5-6 minutes per side.
Remove the chicken from the pan and set aside on a plate to rest.
In the same skillet, whisk the remaining 1 teaspoon of flour into the pan drippings and cook for 1 minute to create a roux.
Slowly pour in the almond milk while whisking constantly, simmering until the gravy thickens to a creamy consistency.
Pour the warm gravy over the chicken and garnish with chopped fresh parsley before serving.