Preheat your oven to 400°F and lightly grease a baking sheet with the olive oil.
Slice the chicken breast into thin cutlets or use a meat mallet to pound it to an even half-inch thickness.
In a shallow bowl, whisk the egg until smooth. In a separate bowl, combine the almond flour, grated parmesan, garlic powder, oregano, salt, and pepper.
Dip each chicken cutlet into the egg wash, then dredge in the almond flour mixture, pressing firmly so the coating adheres to both sides.
Place the breaded chicken on the prepared baking sheet and bake for 15-18 minutes until the chicken is cooked through and the coating is firm.
Remove from the oven, spoon the marinara sauce over the chicken, and sprinkle with the shredded mozzarella cheese.
Return the pan to the oven and broil for 2-3 minutes until the cheese is melted and bubbling.
While the chicken finishes, spiralize the zucchini into noodles and lightly sauté them in a pan for 2 minutes until just tender.
Serve the crispy chicken parmesan over the bed of zucchini noodles.