Preheat your oven to 400°F and line a baking sheet with parchment paper.
Place the chicken breast between two sheets of plastic wrap and pound to an even half-inch thickness.
In a shallow bowl, whisk the egg white until slightly frothy.
In a second shallow bowl, combine the almond flour, parmesan cheese, oregano, garlic powder, sea salt, and black pepper.
Dip the chicken into the egg white, then dredge in the almond flour mixture, pressing firmly to ensure a thick coating.
Place the coated chicken on the baking sheet and drizzle with olive oil.
Bake for 15-18 minutes until the crust is golden and the chicken is cooked through.
Spoon the marinara sauce over the chicken and top with the shredded mozzarella cheese.
Return to the oven for 3-5 minutes until the cheese is bubbly and melted.
While the cheese melts, spiralize the zucchini and sauté in a pan for 2 minutes until just tender, then serve the chicken over the noodles.