3 pasta salad grilled tuna roasted Recipes

tomatoes, about 1 1/4 lb. total, halved, lengthwise, olive oil, salt and freshly ground pepper, to taste, pasta shells, tuna fillets, each about 3/4 inch thick, loosely packed fresh basil leaves, red wine vinegar, fresh mozzarella cheese, finely diced, chopped fresh flat-leaf parsley

tomatoes halved lengthwise, olive oil plus 1/2 cup, salt, freshly ground black pepper, pasta shells, tuna fillets, fresh basil leaves loosely packed, red wine vinegar, fresh mozzarella cheese finely diced, chopped fresh flat leaf parsley