Grilled Vegetable and Swordfish Kebabs

Name: Grilled Vegetable and Swordfish Kebabs
Ingredients: 1/2 cup olive oil, plus more for oiling the grill grates; 1 tablespoon grated garlic; 1 tablespoon grated ginger; Zest of 1 lemon; Salt and freshly ground black pepper; 2 pounds swordfish, cut into 1-inch cubes; 4 to 6 mini bell peppers of varying colors; 1 medium red onion, cut into 1-inch pieces, ends kept on; 1 medium zucchini, cut into 3/4-inch-thick rounds; 1 cup cherry tomatoes; Juice of 1 lemon; 1 cup mayonnaise; 1 tablespoon chopped fresh cilantro; 1 tablespoon chopped fresh parsley; 2 teaspoons minced garlic; 1 teaspoon Dijon mustard; 1 teaspoon sherry vinegar; 1/2 teaspoon hot sauce; 8 pieces pita or naan, toasted on the grill; Chopped fresh cilantro, for garnish; Chopped fresh parsley, for garnish