The Texans (4-0) turned to Nolan after Quintin Demps fractured his left forearm in Sunday's win over Tennessee. Nolan was a seventh-round draft pick by Houston in 2009, and spent his rookie year on injured reserve with a broken wrist. He played in 30 games between 2010-11, but was waived at the end of training camp this year. He was waived by the Dolphins last month.
Houston plays the New York Jets (2-2) on Monday night.