Preheat your oven to 400°F and line a small baking sheet with parchment paper for easy cleanup.
In a shallow dish, whisk together the almond flour, parmesan cheese, dried oregano, garlic powder, sea salt, and black pepper.
Brush the chicken breast evenly with the olive oil, then press it into the almond flour mixture until both sides are thoroughly coated.
Place the coated chicken on the prepared baking sheet and bake for 15 to 18 minutes until the crust is golden and the chicken is cooked through.
Remove the tray from the oven, spoon the marinara sauce over the chicken, and top with the shredded mozzarella cheese.
Return the chicken to the oven for 3 to 5 minutes, or until the cheese is melted and bubbly.
While the cheese melts, quickly sauté the zucchini noodles in a non-stick pan over medium heat for 2 minutes until just tender.
Plate the zucchini noodles and place the hot chicken parmesan directly on top to serve.