Preheat the oven to 350 degrees F.
In a large saucepan over high heat, combine the remaining 6 cups of water, 1/2 teaspoon of the salt and the vegetable oil. Bring to a boil. Add the macaroni and cook, stirring occasionally, until tender, about 8 minutes. Drain and rinse under cool water. Pour into a 2-quart baking dish. Pour the calamari sauce over the macaroni and stir to mix. Arrange the olives on the top of the macaroni.
In a small mixing bowl, combine the bread crumbs with the remaining 1/2 teaspoon salt, black pepper and extra-virgin olive oil. Mix well and sprinkle over the olives. Bake until the bread crumbs are golden brown, about 30 minutes. Spoon onto serving plates and garnish with parsley.