Preheat your oven to 400°F and line a baking sheet with parchment paper.
In a shallow bowl, whisk the egg white until it becomes slightly frothy.
In a separate bowl, combine the almond flour, parmesan cheese, dried oregano, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg white, then coat it thoroughly with the almond flour mixture, pressing gently to adhere.
Place the chicken on the prepared baking sheet, drizzle with olive oil, and bake for 15-20 minutes until golden and cooked through.
While the chicken bakes, spiralize the zucchini into thin noodles and warm the marinara sauce in a small saucepan over medium heat.
Flash-sauté the zucchini noodles in a non-stick pan for 2 minutes until just tender but still bright green.
Plate the zucchini noodles, top with the warm marinara sauce, and finish with the crispy chicken breast.