Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
In a shallow bowl, whisk the egg white until it becomes slightly frothy.
In a separate shallow bowl, combine the almond flour, dried oregano, garlic powder, sea salt, and black pepper to create the breading.
Dip the chicken breast into the egg white, then dredge it in the almond flour mixture until it is evenly and thoroughly coated.
Place the coated chicken onto the prepared baking sheet, drizzle with olive oil, and bake for 15 to 20 minutes until the crust is golden.
Spoon the marinara sauce over the chicken and top with the mozzarella and parmesan cheeses.
Return the chicken to the oven for an additional 5 minutes until the cheese is melted and bubbly.
While the chicken finishes, lightly sauté the zucchini noodles in a non-stick pan for 2 to 3 minutes until just tender.
Serve the crispy chicken parmesan over the bed of zucchini noodles and enjoy immediately.