As a redshirt junior, Charlton set a new school record by averaging 44.8 yards per punt and was named second-team All-Southeastern Conference (SEC) by the league's coaches.

[1] He broke his own record in his senior season by averaging 47.7 yards per punt and was named second-team All-SEC and was an honorable mention All-American by Pro Football Focus.

[7] Charlton made his NFL debut on September 13, 2020, in the season opener against the Las Vegas Raiders, punting twice for 120 yards (60.0 average).

[8] In Week 9, against the Kansas City Chiefs, he completed a 29-yard pass to Brandon Zylstra on a trick play.

[12] On December 24, 2021, Charlton was signed to the practice squad of the Kansas City Chiefs, but was released three days later.