Robert Joseph Hallen (born March 9, 1975 in Mentor, Ohio) is a former American football player. He played high school football at Mentor High School where he was honorable mention all-state his senior season. He was a four year starter at Kent State University while starting 44 consecutive games. He was a first-team All-Mid-American Conference choice in 1997 after switching to right tackle after three seasons at center. After his senior season, he was chosen to play in the 1998 Senior Bowl in Mobile Alabama. He was drafted in the 1998 NFL Draft by the Atlanta Falcons in the second round of the 1998 NFL Draft (53rd overall) and went on to play in Super Bowl XXXIII. He played from 1998 to 2001 for the Falcons. He also played for the San Diego Chargers from 2002 to 2005. He signed with the Cl