Preheat oven to 400°F (200°C) and line a baking sheet with parchment paper.
Slice the chicken breast in half lengthwise to create two thin cutlets and season both sides with sea salt, black pepper, and garlic powder.
In a shallow bowl, whisk the egg until smooth; in a second bowl, combine the almond flour, parmesan cheese, and dried oregano.
Dip each chicken cutlet into the egg wash, then dredge in the almond flour mixture, pressing firmly to ensure an even, crispy coating.
Heat the olive oil in a skillet over medium heat and lightly sear the chicken for 2 minutes per side until the crust is golden brown.
Transfer the chicken cutlets to the prepared baking sheet, top each with marinara sauce and mozzarella cheese, and bake for 10-12 minutes until the cheese is bubbly.
While the chicken finishes baking, lightly sauté the zucchini noodles in the same skillet for 2-3 minutes until just tender.
Serve the crispy chicken parmesan immediately over the zucchini noodles for a clean and satisfying meal.