Pat the chicken breast dry and pound it to an even thickness of about half an inch.
In a shallow bowl, whisk the egg until smooth.
In another shallow bowl, combine the almond flour, grated parmesan cheese, sea salt, black pepper, garlic powder, and dried oregano.
Dip the chicken into the egg, letting any excess drip off, then press firmly into the parmesan mixture until fully coated.
Heat the olive oil in a large skillet over medium heat and cook the chicken for 5-6 minutes per side until the crust is golden and the center is cooked through.
While the chicken cooks, warm the marinara sauce in a small saucepan and quickly sauté or steam the zucchini noodles until just tender.
Plate the zucchini noodles, top with the crispy chicken, and finish with a generous pour of the zesty marinara.