Tuscan Tuna with Tomato Salad

Name: Tuscan Tuna with Tomato Salad
Ingredients: 4 (5 to 6 ounce) fresh or frozen tuna steaks, about 1-inch thick; 3 teaspoons white wine vinegar, divided; 1 teaspoon olive oil; ½ teaspoon dried Italian seasoning, crushed; ¼ teaspoon salt; ½ teaspoon ground pepper, divided; 2 medium tomatoes, seeded and chopped (1 cup); ½ cup thinly sliced fennel bulb; ¼ cup chopped fresh basil; 1 medium shallot, halved and thinly sliced; 1 clove garlic, minced; 1 tablespoon pine nuts, toasted (see Tip) and chopped; 1 tablespoon grated Parmesan cheese