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 smooth. In a second shallow bowl, combine the almond flour, grated Parmesan cheese, dried oregano, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg wash, letting any excess drip off, then press firmly into the Parmesan mixture until both sides are thoroughly coated.
Heat the olive oil in a non-stick skillet over medium heat. Add the chicken and cook for 5-6 minutes per side until the crust is golden brown and the internal temperature reaches 165°F.
While the chicken cooks, use a spiralizer to turn the zucchini into noodles. Sauté the zoodles in a separate pan for 2-3 minutes until just tender, then drain any excess moisture.
In a small saucepan, warm the marinara sauce over low heat until simmering.
Plate the zucchini noodles, top with the zesty marinara sauce, and place the crispy chicken breast on top. Garnish with freshly chopped basil before serving.