Chicken Cacciatore with breasts

4 boneless skinless chicken breasts , 6 to 8 ounce 2 tablespoons extra virgin olive oil McCormick grill seasoning or salt and pepper, to taste 4 Italian rolls[...]

6 chicken breast halves , skin on, bone in about 1/2 # each salt pepper 4 tablespoons olive oil , divided 2 yellow onions , thinly sliced 1 1/2 lbs white[...]