Slice the chicken breast into thin cutlets and season both sides with sea salt, black pepper, and garlic powder.
Whisk the egg in a shallow bowl. In a separate bowl, combine the almond flour, parmesan cheese, and dried oregano.
Dredge each chicken piece in the egg wash, then coat thoroughly in the parmesan-almond mixture, pressing firmly to ensure the crust adheres.
Heat olive oil in a large skillet over medium heat. Add the chicken and sear for 4-5 minutes per side until the crust is golden and the chicken is cooked through.
While the chicken cooks, use a spiralizer to turn the zucchini into thin noodles.
Remove the chicken from the skillet and set aside. Add the zucchini noodles to the same skillet and sauté for 2-3 minutes until just tender.
Warm the marinara sauce in a small saucepan over low heat until simmering.
Plate the zucchini noodles, top with the crispy chicken cutlets, and finish with a generous pour of warm marinara sauce.