Grilled Tuna Steaks with Roasted Tomatoes Recipe

Ingredients

• 4 small tuna steaks (about 4 to 6 ounces each, with bone)
• 1 tablespoon plus 2 teaspoons extra-virgin olive oil, divided
• 1 tablespoon lemon juice
• Vegetable oil cooking spray
• ½ teaspoon salt
• ¼ cup (½ onion) red onion, finely diced
• 2 cloves garlic, minced
• 2 cups cherry or pear tomatoes, cut in halves
• 2 tablespoons fresh flat-leaf parsley, chopped
• 1 tablespoon capers, optional
• Freshly ground black pepper, to taste