Preheat your oven to 400°F and lightly grease a baking dish.
Grate the zucchini using a box grater and place it in a clean kitchen towel, squeezing firmly to remove as much excess moisture as possible.
In a medium mixing bowl, combine the squeezed zucchini, olive oil, lemon juice, lemon zest, grated parmesan, minced garlic, and dried oregano.
Pat the chicken breast dry with paper towels and season both sides with sea salt and black pepper.
Place the chicken in the prepared baking dish and spread the zucchini mixture evenly over the top of the breast, pressing down slightly to adhere.
Bake for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the zucchini topping is lightly golden.
Let the chicken rest for 5 minutes before serving to ensure the juices redistribute for a tender result.