Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a shallow bowl, whisk the egg. In a second shallow bowl, combine the almond flour, parmesan cheese, garlic powder, oregano, sea salt, and black pepper.
Dip the chicken breast into the egg wash, allowing any excess to drip off, then dredge it thoroughly in the almond flour mixture until evenly coated.
Place the chicken on the prepared baking sheet and lightly spray or drizzle with half of the olive oil.
Bake for 15-18 minutes, then remove from the oven. Top the chicken with the marinara sauce and shredded mozzarella cheese.
Return to the oven for another 3-5 minutes, or until the cheese is melted and bubbly and the chicken is cooked through.
While the chicken finishes, heat the remaining olive oil in a skillet over medium heat and sauté the zucchini noodles for 2-3 minutes until just tender.
Plate the zucchini noodles and top with the crispy chicken parmesan. Garnish with fresh basil if desired.