[3] Johnson began his collegiate career at Florida State and joined the team as an early enrollee.
[4] During the summer before his freshman season he was charged with misdemeanor battery for punching a woman during an argument.
Several hours after the game, he was hospitalized due to blood clots in his arm and missed the remainder of his redshirt sophomore season.
[10] After his redshirt junior season, Johnson announced that he would be transferring to Texas Southern as a graduate student.
In 2021, he played in The Spring League for the Sea Lions and passed for 574 yards with 5 touchdowns and 7 interceptions over six games.