Preheat oven to 400°F and line a baking sheet with parchment paper.
Slice the chicken breast into thin cutlets and pound to an even thickness for uniform cooking.
In a shallow bowl, whisk the egg; in a second bowl, combine almond flour, parmesan, garlic powder, oregano, salt, and pepper.
Dip each chicken piece into the egg wash, then dredge in the parmesan mixture, pressing firmly to adhere.
Place chicken on the baking sheet and bake for 15-18 minutes until the crust is golden and chicken is cooked through.
While chicken bakes, spiralize the zucchini into noodles and sauté in a pan with olive oil for 2-3 minutes until just tender.
Warm the marinara sauce in a small saucepan over medium-low heat.
Plate the zucchini noodles, top with the crispy chicken, and finish with a generous spoonful of warm marinara sauce.