In a large bowl, combine the ranch dressing, olive oil, rosemary, Worcestershire, lemon juice, salt, vinegar, sugar, and pepper. After that, wait 5 minutes before serving.
Add the chicken, cover, and refrigerate for a full hour in the fridge. grill to a medium-high temperature.
Six skewers are used to thread chicken onto. 6 minutes each side on the grill. Serve.