Cut chicken lengthwise along the breast ¾ inch strips. Drizzle with olive oil, mint, lemon zest, garlic and pepper. Marinate for 1-4 hours, then remove excess marinade.
Preheat the barbecue to medium heat for direct grilling.
Thread chicken onto bamboo sticks, season with salt, and grill for 3 minutes per side or until cooked through.
Baste with the plum sauce and sprinkle with sesame seeds before serving.
