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.
Season both sides of the chicken with sea salt, black pepper, and garlic powder.
In a shallow dish, whisk the egg white until slightly frothy.
In a second shallow dish, combine the panko breadcrumbs, parmesan cheese, and dried oregano.
Dip the chicken breast into the egg white, allowing excess to drip off, then press firmly into the breadcrumb mixture until evenly coated.
Place the coated chicken on the prepared baking sheet, drizzle with olive oil, and bake for 15 minutes.
Remove from the oven, spoon the marinara sauce over the chicken, and top with the mozzarella cheese.
Switch the oven to broil and cook for 2-3 minutes until the cheese is melted and golden brown.
While the chicken rests, spiralize the zucchini into noodles and sauté in a non-stick pan over medium heat for 2 minutes until just tender.
Plate the zucchini noodles and top with the crispy chicken parmesan.