Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Pound the chicken breast to an even half-inch thickness and pat it dry with paper towels.
In a shallow bowl, whisk the egg; in a second bowl, combine the almond flour, parmesan, oregano, garlic powder, salt, and pepper.
Dip the chicken into the egg wash, then press firmly into the almond flour mixture until thoroughly coated on both sides.
Heat the olive oil in a non-stick skillet over medium-high heat and sear the chicken for 2-3 minutes per side until the crust is golden.
Place the seared chicken on the baking sheet, spread the marinara sauce over the top, and sprinkle with mozzarella cheese.
Bake for 10-12 minutes until the chicken is cooked through and the cheese is bubbly and melted.
While the chicken bakes, lightly sauté the zucchini noodles in the same skillet for 2 minutes until just tender.
Serve the crispy chicken over the bed of zucchini noodles and garnish with freshly chopped basil.