Combine the chicken and Buffalo wing sauce in a large bowl. Cover and refrigerate overnight.
Spray a grill rack with cooking spray and preheat the grill to medium high.
Thread the chicken, celery and tomatoes onto skewers. Grill, covered, until the chicken is cooked through, 3 to 4 minutes per side. Serve with blue cheese dressing.
Photograph by Antonis Achilleos
Courtesy of Food Network Magazine