Nunn joined the Green Bay Packers on February 8, 2005 as a Defensive tackles coach, but was let go along with the majority of the defensive coaching staff after a disappointing 2008 season. Nunn was hired several weeks later by the Tampa Bay Buccaneers as one of two defensive line coaches.
On Wednesday January 27, 2010 Robert Nunn was hired as the New York Giants Defensive Line Coach.
- Green Bay Packers Fire Six Coaches January 5, 2009
- Bucs Promote Williams, Hire Several New Assistant Coaches Yahoo Sports, February 3, 2009