Preheat your air fryer to 400°F for a perfectly crisp finish.
Place the chicken breast between parchment paper and pound to an even half-inch thickness.
In a shallow bowl, whisk the egg; in a second bowl, combine almond flour, garlic powder, oregano, salt, and pepper.
Dredge the chicken in the egg wash, then press firmly into the almond flour mixture until fully coated.
Place chicken in the air fryer basket, lightly mist with oil, and cook for 10-12 minutes, flipping halfway.
Spoon marinara over the chicken and top with mozzarella; air fry for another 2 minutes until the cheese is bubbly.
While chicken finishes, sauté zucchini noodles in a pan with olive oil for 2-3 minutes until just tender.
Plate the zucchini noodles, top with the crispy chicken, and garnish with parmesan cheese.