Place the chicken breast between two sheets of parchment paper and pound to an even half-inch thickness to ensure even cooking.
In a shallow bowl, whisk the egg white until it is slightly frothy.
In a separate shallow bowl, combine the almond flour, grated parmesan cheese, garlic powder, dried oregano, sea salt, and black pepper.
Dip the chicken breast into the egg white, allowing any excess to drip off, then dredge it in the parmesan mixture, pressing firmly to ensure a thick coating.
Heat the olive oil in a non-stick skillet over medium heat.
Add the chicken to the skillet and cook for 5-6 minutes per side, or until the crust is golden brown and the internal temperature reaches 165 degrees Fahrenheit.
While the chicken is cooking, warm the marinara sauce in a small saucepan over low heat.
Once the chicken is finished, remove it from the skillet and let it rest for 2 minutes.
Add the zucchini noodles to the same skillet used for the chicken and flash-sauté for 1-2 minutes until just tender.
To serve, place the zucchini noodles on a plate, top with the warm marinara sauce, and finish with the crispy parmesan chicken.