Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Place the chicken breast between two sheets of plastic wrap and pound it to an even half-inch thickness to ensure even cooking.
In a shallow bowl, whisk together the almond flour, parmesan cheese, garlic powder, dried oregano, sea salt, and black pepper.
Place the egg whites in a separate shallow bowl. Dip the chicken into the egg whites, then dredge it through the almond flour mixture, pressing firmly to adhere the coating.
Place the coated chicken on the prepared baking sheet and bake for 12-15 minutes until the internal temperature reaches 160°F.
Remove the chicken from the oven, spoon the marinara sauce over the top, and sprinkle with the mozzarella cheese.
Return to the oven for 3-5 minutes, or until the cheese is melted and bubbly.
While the chicken finishes, heat the olive oil in a skillet over medium heat and quickly sauté the zucchini noodles for 2 minutes until just tender.
Serve the crispy chicken parmesan immediately over the bed of zesty zucchini noodles.