Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
In a shallow dish, whisk the egg white until it becomes slightly frothy.
In a separate small bowl, combine the almond flour, grated parmesan, garlic powder, dried oregano, sea salt, and black pepper.
Dip the chicken breast into the egg white, ensuring it is fully coated, then dredge it through the almond flour mixture, pressing gently to adhere the crust.
Place the coated chicken on the prepared baking sheet and lightly drizzle with the olive oil.
Bake for 15 to 18 minutes, or 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 for an additional 3 to 5 minutes until the cheese is melted and bubbly.
While the cheese melts, lightly sauté the zucchini noodles in a non-stick pan over medium heat for 2 minutes until just tender.
Plate the zucchini noodles, top with the crispy chicken parmesan, and serve immediately.