Preheat oven to 400°F and line a baking sheet with parchment paper.
Pound the chicken breast to an even thickness of about half an inch for uniform cooking.
In a shallow bowl, whisk the egg white until it becomes slightly frothy.
In a separate shallow bowl, combine the almond flour, parmesan cheese, garlic powder, oregano, salt, and pepper.
Dip the chicken breast into the egg white to coat, then press firmly into the almond flour mixture on both sides.
Place the coated chicken on the prepared baking sheet, drizzle with olive oil, and bake for 15 minutes.
Remove the chicken from the oven, spoon the marinara sauce over the top, and sprinkle with mozzarella cheese.
Return the chicken to the oven for an additional 5 minutes until the cheese is melted and bubbly.
While the chicken finishes, spiralize the zucchini and sauté in a non-stick pan for 2-3 minutes until tender-crisp.
Serve the crispy chicken parmesan immediately over the bed of warm zucchini noodles.