1/2 cup olive oil
1/4 cup white vinegar
1/4 cup freshly squeezed juice from about 3 lemons
2 tablespoons finely chopped fresh parsley
2 tablespoon finely chopped fresh basil
1 tablespoon finely chopped fresh mint
2 teaspoons dried oregano
2 medium cloves minced garlic (about 2 teaspoons)
Kosher salt and freshly ground black pepper

1 1/2 lbs boneless, skinless chicken breasts, cut into 1-inch cubes
6 bamboo skewers, soaked in water for 30 minutes prior to use
6 soft Italian rolls