As a senior, he helped the school have its best season in football, after winning 12 games, obtaining a number 3 ranking and its first ever appearance in the state semifinals.
As a true freshman, although he was a reserve player behind Brandon Burks, he saw considerable action, registering 128 carries for 514 yards (4-yard avg.)
A tackle in the second game against Charleston Southern University shattered his right collarbone and was forced to be medical redshirted.
As a senior, he remained the starter at running back, but shared more snaps with Josh Anderson.
He had 191 rushing yards and one touchdown against Louisiana State University, helping the team to a 24–21 upset win.
Chunn was signed by the Dallas Cowboys as an undrafted free agent after the 2018 NFL draft on April 30.
[12] On March 10, 2022, Chunn was drafted by the Birmingham Stallions of the United States Football League.
[13] After being ruled out for week 1 with a hamstring injury,[14] he was transferred to the team's practice squad on April 14, 2022.