Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Pat the chicken breast dry with paper towels and slice horizontally into thin, even cutlets.
In a shallow bowl, whisk the egg white until slightly frothy.
In a separate shallow dish, combine the almond flour, garlic powder, dried oregano, sea salt, and black pepper.
Dip each chicken cutlet into the egg white, then press firmly into the almond flour mixture until evenly coated on both sides.
Place the coated chicken on the prepared baking sheet and lightly mist with olive oil spray.
Bake for 15 to 18 minutes, or until the chicken is cooked through and the crust is golden brown.
Spoon the marinara sauce over the center of each chicken cutlet, then sprinkle with mozzarella and parmesan cheese.
Return to the oven and broil for 2 to 3 minutes until the cheese is bubbly and slightly browned.
While the chicken finishes, sauté the zucchini noodles in a pan with one teaspoon of olive oil for 2 minutes until just tender.
Serve the crispy chicken parmesan immediately over the bed of warm zucchini noodles.