4 center cut tuna steaks, about 4 to 5 ounces each2 tablespoons of olive oil, dividedSalt and freshly ground pepper (to taste)1/4 teaspoon of red pepper flakes4 sprigs of fresh thyme, coarsely chopped, or 1 teaspoon dried1/3 cup of capers, drained4 small ripe plum tomatoes, cored and cut into small cubes1 tablespoon of fresh lemon juice4 tablespoons of chopped fresh basil or parsley