Leftover roasted chicken can lend itself to so many reincarnated meals and teriyaki chicken is one of them. Since the meat is already cooked it gets added after the veggies, broccoli and snow peas have been lightly stir-fried, then add whatever teriyaki sauce or any stir-fry sauce you wish to use, whether it be a homemade one or a ready-made one. Allow to simmer until heated through then serve over rice. Either way this is another tasty meal that uses up leftovers.