Preheat oven to 375 degrees Fahrenheit.
Trim and slice each zucchini in half lengthwise. Scoring the top of the zucchini is optional. Place the zucchini in the baking dish, drizzle a little extra virgin olive oil on top, and a pinch of sea salt. Bake in the oven for 35-40 minutes or until the zucchini is golden brown.
While zucchini is baking, combine the panko, grated cheese, minced garlic, and chopped parsley or basil in a small bowl. Set aside.
When the zucchini is golden brown, remove from oven and sprinkle the top of each zucchini with the cheese mixture. Drizzle extra virgin olive oil on top and return to the oven. Continue baking until the cheese and bread crumb topping is golden brown and crispy, about 10 minutes.