A 21-year-old South Jersey man has been charged with the fatal shooting of a teenager in the parking lot of a Willingboro shopping center on Feb. 11, according to law enforcement authorities. Knowah Crowderparham, of Beverly City, was charged with first degree murder, weapons offenses and several other crimes in connection with the killing of Adam Janson, 19, in the parking lot in front of a pizza shop. Crowderparham was taken into custody Wednesday and held in the Burlington County Jail in Mount Holly. The homicide and weapons charges were filed Saturday. A detention hearing will be scheduled…