Preheat your oven to 400°F (200°C) 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 until smooth. In a second bowl, combine the almond flour, panko, parmesan cheese, garlic powder, oregano, salt, and pepper.
Dip the chicken into the egg wash, allowing any excess to drip off, then press firmly into the breading mixture until fully coated.
Place the chicken on the prepared baking sheet and drizzle or mist with olive oil.
Bake for 15-18 minutes, or until the chicken is cooked through and the crust is a deep golden brown.
While the chicken is baking, warm the marinara sauce in a small saucepan over low heat.
In a separate skillet, sauté the zucchini noodles with a splash of water for 2 minutes until just tender, then drain any excess liquid.
Plate the zucchini noodles, top with the warm marinara sauce, and finish with the crispy chicken breast.