Career
He was signed by the Green Bay Packers as an undrafted free agent in 2003. He played college football at Central Michigan University. He has also played for the Philadelphia Eagles.
He is the younger brother of former Carolina Panthers and New York Jets defensive tackle Kris Jenkins.
Jenkins played college football for Central Michigan University, where he recorded 40 tackles, seven tackles for a loss, 4½ sacks, and two passes defensed during his senior year. Green Bay Packers
Jenkins was originally signed by Green Bay as a rookie free agent after the "03 draft.
One year later, after an impressive NFL Europe season and strong training camp, landed a spot on the Packers" roster. From 2004 to November 2006, Jenkins was the backup for Kabeer Gbaja-Biamila, and took over the starting role the final month of the 2006 season.
As the starter for the last month of games, he recorded a career-high 6½ sacks that year, including his first three-sack game versus
Detroit on December 17, 2006. On February 26, 2007, Jenkins signed a four-year, $16 million contract extension. Jenkins batted down nine passes in 2007, the most by a Packers defensive lineman since the team began recording the statistic in 1980.
He also finished 2007 with 26 total combined tackles and 1 sack.
In the 2008 season, the Packers decided to start Jenkins rather than Gbaja-Biamila for the second season in a row. He could only play four games though, before he suffered a torn pectoral muscle against the Tampa Bay Buccaneers on September 28, 2008.
Two days later, he was placed on injured reserve. In the 2009 season, Jenkins returned as a starting defensive end because the Packers had switched from a 4-3 to a 3-4 defense.
In the 2010 season Jenkins missed 5 games with a calf injury.
Philadelphia Eagles
The Philadelphia Eagles signed Jenkins to a five-year, $25 million contract on July 30, 2011. In 2011, he recorded 5.5 sacks, 24 hurries, and seven tackles-for-loss. He agreed to a restructured contract on February 21, 2012, with the new contract running through the 2014 season instead of the 2015 season.
On February 25, 2013, the Eagles declined his roster bonus, making him a free agent.
New York Giants
On March 10, 2013, Jenkins was signed to a three-year contract by the New York Giants. He is starting with former Eagles teammate and new Giants teammate Mike Patterson in the 4-3 Defense.