Soak 10 or so 8-inch wooden skewers in water to cover for at least 30 minutes (one skewer for each tender).
In a large bowl or container, mix together the curry powder, chili powder, cumin, allspice, cinnamon, and salt and pepper until well blended. Add the chicken tenders and toss in the mixture to coat.
Preheat the broiler or grill. Thread one chicken tender onto each skewer. Broil or grill for about 3 minutes on each side, until they are just cooked throughout.
Notes
Don’t forget to soak the skewers first, which prevents them from burning. Since the cooking time is so short even 20 minutes helps keep the wood from crisping up, but 30 – 40 minutes is optimal.