Preheat your oven to 400°F and lightly grease a baking sheet with the olive oil.
Place the chicken breast between two sheets of parchment paper and pound to an even half-inch thickness.
In a shallow bowl, whisk the egg white until it becomes slightly frothy.
In a second shallow bowl, mix together the almond flour, grated parmesan, dried oregano, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg white, ensuring it is fully moistened, then press it firmly into the almond flour mixture to coat both sides.
Place the coated chicken on the prepared baking sheet and bake for 15 minutes.
Remove the tray from the oven, spoon the marinara sauce over the chicken, and sprinkle evenly with the shredded mozzarella.
Return the chicken to the oven for another 5 to 7 minutes until the cheese is melted and bubbly.
While the chicken finishes, spiralize the zucchini into noodles and lightly steam or sauté them for 2 minutes to serve as a fresh base for the chicken.