Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Place the chicken breast between two sheets of plastic wrap and pound with a meat mallet to an even half-inch thickness.
In a shallow bowl, whisk the egg until smooth; in a separate bowl, combine the almond flour, parmesan cheese, garlic powder, oregano, salt, and pepper.
Dip the chicken breast into the egg wash, allowing any excess to drip off, then press firmly into the almond flour mixture to coat thoroughly.
Place the breaded chicken on the prepared baking sheet, drizzle with olive oil, and bake for 15 minutes until the crust is firm.
Remove the pan from the oven, spoon the marinara sauce over the chicken, and sprinkle evenly with the mozzarella cheese.
Return the chicken to the oven for an additional 5 to 7 minutes until the cheese is melted and the chicken is cooked through.
Spiralize the zucchini into noodles and serve the hot, crispy chicken parmesan directly on top of the fresh zoodles.