Slice the chicken breast into thin cutlets and season both sides with sea salt and black pepper.
Whisk the egg white in a shallow bowl until slightly frothy.
In a separate shallow dish, combine the parmesan cheese, almond flour, and dried oregano.
Dip each chicken cutlet into the egg white, then press firmly into the parmesan mixture until evenly coated.
Heat the olive oil in a large non-stick skillet over medium heat and sear the chicken for 4-5 minutes per side until golden and cooked through.
While the chicken cooks, spiralize the zucchini into noodles and mince the garlic.
Remove the chicken from the pan and set aside; add the garlic and zucchini noodles to the same skillet, sautéing for 2 minutes until just tender.
Warm the marinara sauce in a small saucepan or microwave until hot.
Plate the zucchini noodles, top with the crispy parmesan chicken, and pour the zesty marinara sauce over the top.
Garnish with freshly torn basil leaves before serving.