Place the chicken breast between two sheets of parchment paper and pound to an even half-inch thickness.
Season both sides of the chicken with sea salt, black pepper, and garlic powder.
In a shallow bowl, whisk the half egg. In a second shallow bowl, combine the almond flour, grated parmesan, and dried oregano.
Dip the chicken breast into the egg wash, then dredge in the parmesan mixture, pressing firmly to ensure a thick crust.
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 vegetable peeler or spiralizer to create long ribbons from the zucchini.
Lightly sauté the zucchini ribbons in a separate pan for 2-3 minutes until just tender, then season with a pinch of salt.
Warm the marinara sauce in a small saucepan over low heat.
Plate the zucchini ribbons, place the crispy chicken on top, and finish with a generous pour of the zesty marinara.