Preheat your oven to 400°F 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. In a second bowl, combine almond flour, 1 tablespoon of parmesan, garlic powder, oregano, salt, and pepper.
Dip the chicken into the egg, then coat thoroughly with the almond flour mixture, pressing firmly to adhere the breading.
Place the chicken on the baking sheet and bake for 15-18 minutes until the crust is golden and chicken is cooked through.
While the chicken bakes, spiralize the zucchini into noodles and lightly sauté in a pan with olive oil for 2-3 minutes until just tender.
Warm the marinara sauce in a small saucepan over medium heat.
Plate the zucchini noodles, top with the warm marinara, the crispy chicken, and the remaining tablespoon of parmesan cheese.