The Chargers signed Vannett to their active roster Wednesday, Aaron Wilson of KPRC 2 Houston reports.
Vannett joined the Chargers' practice squad on Aug. 31 after being cut by the Texans ahead of the 53-man roster deadline. The Chargers are the sixth team Vannett has played for since he entered the league as a third-round pick in the 2016 NFL Draft. He'll add depth at the tight end position behind Gerald Everett -- who missed Sunday's game against the Bears due to a hip injury -- Donald Parham and Stone Smartt.