Preheat your oven to 400°F and line a baking sheet with parchment paper.
Pound the chicken breast to an even half-inch thickness to ensure uniform cooking.
Brush both sides of the chicken breast with Dijon mustard to act as a binder for the crust.
In a shallow dish, whisk together the almond flour, parmesan cheese, garlic powder, oregano, sea salt, and black pepper.
Press the chicken firmly into the almond flour mixture until it is completely and evenly coated.
Place the chicken on the prepared baking sheet, drizzle with olive oil, and bake for 15-18 minutes.
Remove from the oven, spoon the marinara sauce over the chicken, and top with the shredded mozzarella.
Return to the oven for 3-5 minutes until the cheese is melted and bubbly.
While the chicken finishes, lightly sauté the zucchini noodles in a pan for 2 minutes until just tender.
Serve the crispy chicken over the bed of zucchini noodles and enjoy immediately.