Preheat your oven to 400°F and lightly grease a baking sheet with half of the olive oil.
Place the chicken breast between two sheets of parchment paper and pound to an even half-inch thickness.
In a shallow bowl, whisk the egg until smooth. In a second shallow bowl, combine the almond flour, 1 tablespoon of parmesan cheese, oregano, garlic powder, salt, and pepper.
Dip the chicken breast into the egg wash, allowing any excess to drip off, then dredge it through the almond flour mixture, pressing firmly to ensure an even coating.
Place the coated chicken on the prepared baking sheet and bake for 15 minutes.
Remove the pan from the oven. Spoon the marinara sauce over the chicken and top with the mozzarella cheese and the remaining parmesan.
Return the chicken to the oven and bake for an additional 5-7 minutes, or until the cheese is melted and bubbly.
While the chicken finishes, sauté the zucchini noodles in a pan with the remaining olive oil over medium heat for 2-3 minutes until just tender.
Serve the crispy chicken parmesan over the bed of zucchini noodles immediately.