In a bowl, combine the coconut flour, almond meal, onion powder, garlic powder, and salt.  

In another bowl, lightly beat the egg with 1Tbsp water.  In another dish, place 1/2 cup of the coconut flour mixture.  Heat the olive oil in a skillet over medium heat.  Bread the chicken by coating both sides in the egg mixture, then in the breading mixture.  Shake off the excess so that you have a thin coating of breading.  Place the chicken in the skillet and cook about 3-4 minutes per side, until cooked through.  In the meantime, heat the marinara in the microwave.  Top the chicken with warm marinara.  

Serve with spaghetti noodles, carrot noodles, noodles, or mashed potatoes.