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 plastic wrap and pound to an even half-inch thickness, then season both sides with sea salt and black pepper.
In a shallow bowl, whisk the egg until smooth. In a second shallow bowl, combine the almond flour, grated parmesan, garlic powder, and dried oregano.
Dip the chicken breast into the egg wash, letting any excess drip off, then dredge it through the almond flour mixture, pressing firmly to ensure an even coating.
Place the breaded chicken on the prepared baking sheet and bake for 15-18 minutes, or until the internal temperature reaches 165°F.
Remove from the oven and spoon the marinara sauce over the center of the chicken, then sprinkle with the shredded mozzarella.
Switch the oven to broil and place the chicken back in for 2-3 minutes until the cheese is bubbly and slightly browned.
While the chicken rests, sauté the zucchini noodles in a pan with the extra virgin olive oil over medium heat for 2 minutes until just tender, and serve as the base for your chicken.