Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
In a shallow bowl, whisk the egg white until slightly frothy.
In a separate shallow dish, combine the grated parmesan cheese, almond flour, 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 parmesan mixture, pressing firmly so the coating sticks.
Place the chicken on the prepared baking sheet and bake for 18-20 minutes, or until the coating is golden brown and the internal temperature reaches 165°F.
While the chicken is baking, heat the olive oil in a large skillet over medium heat and sauté the zucchini noodles for 2-3 minutes until tender-crisp.
Warm the marinara sauce in a small saucepan over low heat.
To serve, layer the zucchini noodles on a plate, top with the warm marinara sauce, and place the crispy parmesan chicken on top.