Preheat your oven to 400°F and lightly coat a baking sheet with half of the olive oil.
Place the chicken breast between two sheets of parchment paper and pound to an even half-inch thickness.
In a small shallow bowl, whisk the egg until smooth. In a second bowl, combine the almond flour, 1 tablespoon of parmesan, garlic powder, oregano, salt, and pepper.
Dip the chicken breast into the egg wash, letting the excess drip off, then press firmly into the almond flour mixture until fully coated.
Place the chicken on the prepared baking sheet and bake for 15 minutes until the coating is golden and crisp.
Remove from the oven, spoon the marinara sauce over the center of the chicken, and top with the shredded mozzarella and remaining parmesan.
Switch the oven to broil and return the chicken for 2-3 minutes until the cheese is bubbly and slightly browned.
While the chicken rests, spiralize the zucchini and quickly sauté it in a pan with the remaining olive oil for 2 minutes until just tender.
Plate the zucchini noodles and place the crispy chicken parmesan directly on top to serve.