In a small resealable plastic bag, combine chicken and 1/2 cup salad dressing. Seal bag and turn to coat; refrigerate for at least 15 minutes. Meanwhile, in a second large resealable plastic bag, combine the oil, garlic salt and rosemary. Add vegetables and toss to coat.
Drain and discard marinades. On eight metal or soaked wooden skewers, alternately thread chicken and vegetables. Grill kabobs, uncovered, over medium-hot heat for 12-15 minutes or until juices run clear, turning and basting occasionally with remaining salad dressing.
Makes 8 kabobs. About 4 servings.