Heat grill or grill pan over medium-high heat.
Combine garlic, ginger, soy, chile sauce, vinegar, sesame oil and honey or syrup in a blender.
Season meat with salt and pepper, and drizzle with a little oil. Place on grill and cook a couple of minutes on each side to mark, then baste heavily with sauce and cook 3-4 minutes more, turning and basting frequently.
Sprinkle chicken pieces with scallions and sesame seeds, and serve on slider rolls topped with cucumber slices and slaw.