Calumet City police say the boy was trying to rob a barbershop at 157th and Burnham when he was shot.
They say the store owner shot the teen twice.
The father of the 15-year-old says the teen may have actually been the victim of a robber. Carey Kelly says he and his son are frequently harassed because they are related to R. Kelly.
"People have tried to rob us. They think we got money 'cause my brother (is) rich. That's R. Kelly money, that's not our money," said Carey Kelly.
The teenager is being treated for a chest wound.
