1 1/2 cups diced seeded tomato |
2 tablespoons finely chopped pitted kalamata olives |
1 tablespoon chopped fresh basil |
1 tablespoon chopped fresh flat-leaf parsley |
2 tablespoons balsamic vinegar |
1 teaspoon chopped fresh oregano |
1/2 teaspoon minced garlic |
5 teaspoons extravirgin olive oil, divided |
1 pound skinless, boneless chicken breast |
1/2 teaspoon kosher salt, divided |
1/2 teaspoon freshly ground black pepper |
cooking spray |
1/4 cup (1 ounce) crumbled feta cheese |
4 (2-ounce) ciabatta sandwich rolls, halved |