Slice the chicken breast into thin cutlets and pound them to an even thickness for uniform cooking.
In a shallow bowl, whisk the egg white until it becomes slightly frothy.
In a separate shallow dish, combine the almond flour, grated parmesan, garlic powder, sea salt, and black pepper.
Dip each chicken cutlet into the egg white, then press it firmly into the almond flour mixture to coat both sides thoroughly.
Heat the olive oil in a large non-stick skillet over medium heat.
Cook the chicken for 4-5 minutes per side until the crust is golden brown and the internal temperature reaches 165 degrees Fahrenheit.
In a small saucepan, warm the marinara sauce over low heat until simmering.
Remove the chicken from the skillet and set aside; in the same skillet, briefly sauté the zucchini noodles for 2 minutes until just tender.
Serve the crispy chicken over the zucchini noodles, top with the warm marinara sauce, and garnish with fresh basil.