Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
In a shallow bowl, whisk the egg until smooth. In a second shallow bowl, combine the almond flour, parmesan cheese, garlic powder, oregano, sea salt, and black pepper.
Dip the chicken breast into the egg wash, allowing any excess to drip off, then dredge it thoroughly in the almond flour mixture until evenly coated.
Place the coated chicken on the prepared baking sheet and lightly drizzle with olive oil to help achieve a golden color.
Bake for 15-20 minutes, or until the chicken reaches an internal temperature of 165°F.
Remove from the oven and spoon the marinara sauce over the chicken, then top with the mozzarella cheese.
Return to the oven for 3-5 minutes until the cheese is melted and bubbly.
While the cheese melts, lightly sauté the zucchini noodles in a pan for 2 minutes until tender.
Serve the crispy chicken parmesan over the bed of zucchini noodles and enjoy immediately.