Preheat oven to 400°F and line a baking sheet with parchment paper.
Slice the chicken breast in half lengthwise to create two thinner cutlets.
Whisk the egg in a shallow bowl.
Mix almond flour, 1 tbsp parmesan, oregano, garlic powder, salt, and pepper in a separate shallow dish.
Dip each cutlet into the egg, then press into the almond flour mixture until fully coated.
Place chicken on the baking sheet, drizzle with olive oil, and bake for 15 minutes.
Spoon marinara over the chicken and top with mozzarella and remaining parmesan.
Return to the oven for 5 minutes or until cheese is melted and golden.
Spiralize the zucchini and sauté in a pan for 2 minutes until just tender.
Serve the crispy chicken over the warm zucchini noodles.