Slice the chicken breast in half lengthwise to create thin cutlets and pound to an even thickness.
In a shallow bowl, whisk the egg until smooth for the wash.
In a separate dish, combine the almond flour, parmesan cheese, garlic powder, oregano, salt, and pepper to create the breading.
Dip each chicken cutlet into the egg wash, then press firmly into the parmesan mixture to coat both sides thoroughly.
Heat the olive oil in a large skillet over medium heat.
Cook the chicken for 4 to 5 minutes per side until the crust is golden brown and the chicken is cooked through.
While the chicken rests, spiralize or thinly slice the zucchini and sauté in the same skillet for 2 minutes until tender-crisp.
Warm the marinara sauce in a small saucepan or microwave until steaming.
Plate the sautéed zucchini, top with the crispy chicken, and finish with a generous pour of the zesty marinara sauce.