Preheat broiler with rack about 8 inches from heat
Toss pork with chili powder and salt
Thread pieces of pork, orange and red pepper on each skewer
Wrap exposed end of each skewer with foil to discourage scorching
Mix honey and vinegar together for glaze
Broil, turning occasionally and brushing well with glaze during last 2 minutes, until pork is barely pink when pierced with tip of knife, about 8 minutes