Place the chicken breast between two pieces of parchment paper and pound to an even half-inch thickness.
In a shallow bowl, whisk the egg until well combined.
In a separate shallow dish, combine the almond flour, parmesan cheese, garlic powder, oregano, sea salt, and black pepper.
Dip the chicken breast into the egg wash, then press firmly into the parmesan mixture until fully coated on both sides.
Heat the olive oil in a non-stick skillet over medium heat.
Add the chicken to the skillet and cook for 5 to 6 minutes per side until the crust is golden brown and the chicken is cooked through.
While the chicken cooks, warm the marinara sauce in a small saucepan over low heat.
In a separate pan, lightly sauté the zucchini noodles for 2 minutes until just tender but still crisp.
Serve the chicken over the zucchini noodles, topped with the warm marinara sauce and garnished with fresh basil.