Preheat your oven to 400°F and line a baking sheet with parchment paper.
Pound the chicken breast to an even half-inch thickness to ensure uniform cooking and tenderness.
In a shallow bowl, whisk the egg; in a separate bowl, combine almond flour, parmesan, garlic powder, oregano, salt, and pepper.
Dip the chicken into the egg wash, then press firmly into the almond flour mixture until both sides are well coated.
Heat avocado oil in a skillet over medium-high heat and sear the chicken for 2 minutes per side until golden and crispy.
Transfer the chicken to the prepared baking sheet, top with marinara sauce and mozzarella, and bake for 10 minutes.
While the chicken finishes, lightly sauté the zucchini noodles in the same skillet for 2-3 minutes until just tender.
Serve the crispy chicken parmesan over the bed of zucchini noodles and enjoy immediately.