Preheat your oven to 400°F and line a baking sheet with parchment paper.
In a shallow bowl, whisk the egg until smooth; in a second bowl, combine the almond flour, parmesan cheese, garlic powder, oregano, salt, and pepper.
Dip the chicken breast into the egg wash, then coat thoroughly with the almond flour mixture, pressing gently to adhere the crust.
Place the chicken on the prepared baking sheet and drizzle with olive oil, then bake for 15-18 minutes until golden and cooked through.
Top the chicken with marinara sauce and mozzarella cheese, then return to the oven for 3-5 minutes until the cheese is bubbly.
While the chicken finishes, spiralize the zucchini into noodles and lightly sauté them in a pan with a splash of water for 2 minutes until just tender.
Plate the zucchini noodles, top with the crispy chicken parmesan, and garnish with fresh basil leaves.