Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
In a shallow bowl, whisk the egg until smooth. In a separate shallow bowl, combine the almond flour, grated parmesan, garlic powder, oregano, sea salt, and black pepper.
Dip the chicken breast into the egg wash, allowing any excess to drip off, then dredge it thoroughly in the almond flour mixture until evenly coated.
Place the coated chicken on the prepared baking sheet and bake for 15-20 minutes, or until the internal temperature reaches 165°F and the crust is golden and crispy.
While the chicken is baking, warm the marinara sauce in a small saucepan over medium-low heat.
Heat the olive oil in a large skillet over medium heat. Sauté the zucchini noodles for 2-3 minutes until just tender but still bright green.
To serve, plate the zucchini noodles, top with the warm marinara sauce, place the crispy chicken on top, and garnish with fresh basil.