Place the chicken breast between two sheets of parchment paper and pound with a meat mallet until it is an even half-inch thickness.
In a shallow bowl, whisk the egg until well combined.
In a separate shallow dish, mix together the almond flour, grated parmesan cheese, garlic powder, dried oregano, sea salt, and black pepper.
Dip the chicken into the egg wash, allowing any excess to drip off, then press firmly into the parmesan mixture until fully coated.
Heat the olive oil in a large non-stick skillet over medium heat and cook the chicken for 5-6 minutes per side until the crust is golden brown and crispy.
While the chicken cooks, use a spiralizer to turn the zucchini into noodles and sauté them in a separate pan for 2-3 minutes until just tender.
Warm the marinara sauce in a small saucepan over low heat.
Serve the crispy chicken over the zucchini noodles, topped with the warm marinara sauce and a garnish of fresh basil.