Chapman, a 6-1, 283 pounder, is the first defensive lineman to choose the Tigers for the 2007 signee class.
He selected Auburn over Alabama, Ole Miss and others. He is the second Hoover player to commit to the Tigers, joining offensive lineman Ryan Pugh. Another teammate, offensive lineman Patrick Crump, is committed to Alabama.
Chapman was a standout at a two-day football camp at Auburn in June and the Scout.com combine in Tuscaloosa. He says that trip to Auburn was a good experience. "I learned more technique than I already knew and I learned to compete more," he says. "It was also good to compete against players I hadn't gone against before."
Chapman is shown at a football camp this summer.
As a junior, the defensive tackle made 65 tackles and was credited with six sacks.
The three-star defensive tackle was scheduled to take an unofficial visit to Alabama Friday, but decided to end his recruitment Tuesday night.
"I just committed to Auburn," Chapman says. "I called coach (Terry) Price and let him know about my decision. He was real excited.
"He told me he was talking about me yesterday when they were going over the defensive players they are recruiting," Chapman adds. Price recruits the Birmingham area for the Tigers and coaches defensive ends.
"He told me he was real happy that I am an Auburn Tiger," Chapman adds. "I only spoke to him. I am going to talk to coach (Tommy) Tuberville tomorrow (Wednesday)."
Commenting on his decision, Chapman says he narrowed his choices to in-state schools Auburn and Alabama. He says the Tide wanted him to grayshirt.
"I have been weighing the pros and cons of each program," he says. "I feel like I have worked too hard to only receive a grayshirt offer. I am going to play for a team that wants me now. I had plenty of other opportunities than to take a grayshirt. I am very happy with my decision."
Chapman gave several other reasons why as one of the state's best defensive lineman verbally committed to the Tigers.
"I have a chance to start playing early," he says. "They want me to play noseguard and right now they only have two on their roster.
"They play the same defense we play at Hoover. I have a good chance to graduate early and get my degree. I like all the coaches. They are really good."
Chapman's attention will now focus on Hoover's upcoming season and to sway Scout.com five-star defensive tackle Kerry Murphy to follow him to the Plains.
"It feels real good to be committed to Auburn," Chapman says. "I don't have to worry about anything except for Hoover football.
"I am going to try to get Kerry to come to Auburn with me and Ryan (Pugh). Ryan never pressured me. He respected my decision, but he always told me Auburn was a good place."