Preheat your air fryer to 400°F (200°C).
Place the chicken breast between two sheets of parchment paper and pound to an even 1/2-inch thickness.
In a shallow bowl, whisk the egg until smooth. In a second bowl, combine the almond flour, parmesan cheese, oregano, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg wash, allowing any excess to drip off, then press firmly into the almond flour mixture until fully coated.
Lightly mist the air fryer basket with olive oil, place the chicken inside, and drizzle the remaining teaspoon of oil over the top.
Air fry for 10 minutes, flipping halfway through, until the coating is golden and the chicken is cooked through.
Spoon the marinara sauce over the chicken and top with the fresh mozzarella, then air fry for an additional 2 minutes until the cheese is bubbly and melted.
While the chicken finishes, quickly sauté the zucchini noodles in a pan for 2 minutes and serve immediately alongside the chicken.