Preheat your oven to 400°F 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 it becomes slightly frothy.
In a separate shallow dish, combine the panko breadcrumbs, parmesan, oregano, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg white to coat, then press it firmly into the breadcrumb mixture until fully encrusted.
Place the chicken on the prepared baking sheet and bake for 15 minutes.
Remove the tray from the oven, spoon the marinara sauce over the chicken, and top with the mozzarella cheese.
Return to the oven for 5 minutes, or until the cheese is melted and bubbly and the chicken is cooked through.
While the chicken finishes, sauté the zucchini noodles in a pan with the olive oil for 2-3 minutes until tender-crisp.
Serve the crispy chicken parmesan immediately over the bed of warm zucchini noodles.