MIX barbecue sauce, peanut butter, lime juice and cilantro in resealable plastic bag. Add chicken; seal bag. Turn bag over several times to evenly coat chicken with the barbecue sauce mixture. Refrigerate at least 1 hour or overnight to marinate.
PREHEAT grill to medium-high heat. Remove chicken from marinade; discard marinade. Thread chicken onto skewers.
GRILL chicken 4 to 5 minutes on each side or until chicken is cooked through.