For marinade, blend Wish-Bone® Robusto Italian Dressing, lime juice, cilantro and lime peel. Pour 3/4 cup marinade over steak, red pepper and onions in large, shallow nonaluminum baking dish or plastic bag; turn to coat. Cover, or close bag, and marinate in refrigerator, turning occasionally, up to 3 hours. Refrigerate remaining marinade. Remove steak and vegetables from marinade, discarding marinade. Alternately thread steak and vegetables on skewers. Grill or broil, turning and brushing occasionally with refrigerated marinade, until steak is desired doneness and vegetables are tender. To serve, fold tortilla around skewer and gently pull steak and vegetables off skewer into tortilla. Garnish with Fajita Fixin's. *Fajita Fixin's: Use shredded cheese, shredded lettuce, sour cream, guacamole and/or chopped tomatoes.