Preheat your oven to 400°F and lightly grease a baking sheet with half of the olive oil.
Whisk the egg in a shallow bowl until well beaten.
In a separate shallow dish, combine the almond flour, parmesan cheese, dried oregano, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg wash, then press it firmly into the almond flour mixture until it is evenly and thickly coated.
Place the coated chicken on the prepared baking sheet, drizzle with the remaining olive oil, and bake for 15-18 minutes until the chicken is cooked through.
Remove the chicken from the oven and spoon the marinara sauce over the top, followed by the shredded mozzarella cheese.
Switch the oven to broil and place the chicken back inside for 2-3 minutes until the cheese is bubbly and slightly browned.
While the chicken rests, lightly sauté the zucchini noodles in a pan for 2 minutes and serve the crispy chicken directly on top.