Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
In a shallow bowl, whisk the egg until smooth. In a separate shallow bowl, combine the almond flour, parmesan cheese, garlic powder, oregano, sea salt, and black pepper.
Dip the chicken breast into the egg wash, then dredge it through the almond flour mixture, pressing firmly so the coating adheres to all sides.
Place the breaded chicken on the prepared baking sheet and drizzle with olive oil. Bake for 15-18 minutes or until the internal temperature reaches 165°F.
Remove the chicken from the oven and spoon the marinara sauce over the top, followed by the mozzarella cheese. Return to the oven and broil for 2-3 minutes until the cheese is bubbly and golden.
While the chicken finishes, lightly sauté the zucchini noodles in a pan for 2 minutes until just tender. Serve the chicken over the noodles and garnish with fresh basil.