Butterfly the chicken breast or pound it between parchment paper to 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, dried oregano, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg wash, allowing excess to drip off, then press firmly into the parmesan mixture until fully coated.
Heat the olive oil in a non-stick skillet over medium heat.
Add the chicken to the skillet and cook for 5 to 6 minutes per side until the crust is golden brown and the internal temperature reaches 165 degrees Fahrenheit.
While the chicken cooks, spiralize the zucchini into thin noodles and lightly sauté them in a separate pan for 2 minutes until just tender.
Warm the marinara sauce in a small saucepan over low heat.
Place the zucchini noodles on a plate, top with the crispy chicken breast, and spoon the warm marinara sauce over the center.
Garnish with freshly chopped basil before serving.