Grilled Chicken Ranch Burgers

In a large bowl, mix the first 6 ingredients. Add chicken; mix lightly but thoroughly. Shape mixture into sixteen 1/2-in.-thick patties. Brush both sides with oil; refrigerate, covered, 15 minutes to allow patties to firm up., Grill burgers, covered, over medium heat or broil 3-4 inches from heat 5-6 minutes on each side or until a thermometer reads 165°. Serve on buns with desired toppings.