Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Place the chicken breast between two sheets of plastic wrap and pound to an even half-inch thickness.
In a shallow bowl, whisk the egg white until frothy. In a second bowl, combine the almond flour, parmesan cheese, oregano, garlic powder, salt, and pepper.
Dip the chicken breast into the egg white, then dredge it through the almond flour mixture, pressing firmly to ensure an even coating.
Place the chicken on the prepared baking sheet and lightly drizzle or spray with olive oil.
Bake for 15-18 minutes until the chicken is cooked through and the crust is golden brown.
Remove from the oven, spoon the marinara sauce over the chicken, and top with the shredded mozzarella cheese.
Return to the oven and broil for 2-3 minutes until the cheese is bubbly and slightly browned.
While the chicken rests, quickly sauté the zucchini noodles in a pan over medium heat for 2 minutes until just tender.
Serve the chicken over the zucchini noodles and garnish with fresh torn basil.