Slice the zucchini into thin ribbons using a vegetable peeler or spiralizer and set aside.
In a shallow bowl, whisk the half egg. In a separate shallow dish, combine the almond flour, grated parmesan, garlic powder, dried oregano, sea salt, and black pepper.
Dip the chicken breast into the whisked egg, allowing excess to drip off, then dredge thoroughly in the parmesan and almond flour mixture until evenly coated.
Heat the extra virgin 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 coating is golden brown and the internal temperature reaches 165°F.
Remove the chicken from the pan and let it rest on a cutting board.
In the same skillet, add the marinara sauce and zucchini ribbons. Sauté for 2-3 minutes until the sauce is bubbling and the zucchini is just tender.
Place the zesty marinara and zucchini on a plate and top with the crispy parmesan chicken to serve.