Preheat your oven to 400°F and line a baking sheet with parchment paper.
In a shallow bowl, whisk the egg until smooth.
In a separate bowl, combine the almond flour, parmesan cheese, garlic powder, oregano, sea salt, and black pepper.
Dip the chicken breast into the egg wash, then coat thoroughly with the almond flour mixture, pressing gently to adhere.
Place the chicken on the prepared baking sheet, drizzle with olive oil, and bake for 15-20 minutes until the crust is golden.
Remove from the oven, spoon the marinara sauce over the chicken, and top with the shredded mozzarella.
Return to the oven for 3-5 minutes until the cheese is bubbly and melted.
Serve the chicken immediately over a bed of fresh zucchini noodles.