Preheat your oven to 400°F (200°C) 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 slightly frothy. In a second bowl, combine panko, oregano, garlic powder, salt, and pepper.
Dip the chicken into the egg white, then dredge in the panko mixture, pressing firmly to ensure a thick, even coating.
Place the chicken on the baking sheet and lightly mist with olive oil. Bake for 15-18 minutes until the crust is golden and the chicken is cooked through.
Remove from the oven, spoon the marinara sauce over the chicken, and top with shredded mozzarella and parmesan.
Return to the oven for 3-5 minutes or until the cheese is melted and bubbly.
While the cheese melts, sauté the zucchini noodles in a pan with the remaining olive oil for 2-3 minutes until just tender.
Serve the crispy chicken parmesan over the bed of zucchini noodles immediately.