01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly oil it.
02 - Pat chicken breasts dry with paper towels. Season both sides generously with salt, black pepper, and garlic powder.
03 - In a shallow bowl, whisk the egg until blended. In another shallow bowl, combine almond flour (or breadcrumbs), Parmesan cheese, and Italian herbs, mixing thoroughly.
04 - Dip each seasoned chicken breast into the egg mixture, allowing excess to drip off. Press firmly into the almond flour mixture, coating both sides evenly and shaking off any excess.
05 - Arrange coated chicken breasts on the prepared baking sheet in a single layer. Bake for 20 minutes until golden and cooked through.
06 - Remove chicken from oven. Spoon marinara sauce evenly over each breast, spreading to cover. Top with shredded mozzarella and additional Parmesan cheese.
07 - Return to oven and bake for 8–10 minutes more until cheese is melted and bubbly and chicken reaches internal temperature of 165°F.
08 - While chicken finishes, heat olive oil in large skillet over medium heat. Add spiralized zucchini and sauté for 2–3 minutes until just tender-crisp. Season with salt and pepper.
09 - Divide zucchini noodles among four plates. Top each with baked chicken parmesan. Garnish with fresh basil leaves and serve immediately.