Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Place the chicken breast between two sheets of parchment and pound to an even half-inch thickness to ensure even cooking.
In a shallow dish, whisk the egg white until it becomes slightly frothy.
In a separate shallow bowl, mix together the almond flour, parmesan cheese, garlic powder, oregano, salt, and pepper.
Dip the chicken breast into the egg white, then press it firmly into the almond flour mixture until both sides are well-coated.
Place the breaded chicken on the prepared baking sheet and bake for 15 to 18 minutes until the crust is golden.
Remove from the oven, spoon the marinara sauce over the chicken, and sprinkle with the shredded mozzarella cheese.
Return the chicken to the oven for 3 to 5 minutes until the cheese is melted and bubbly.
While the cheese melts, heat the olive oil in a large skillet over medium heat and sauté the zucchini noodles for 2 minutes until just tender.
Plate the zucchini noodles and top with the crispy chicken parmesan to serve immediately.