Troy McCoy, 39, and Shakerra Bonds, 31, are accused of assaulting the teen back in August after he asked McCoy to wear a face covering while in line.
Though the worker walked away, the couple spotted him again hours later.
McCoy allegedly got off a ride and sucker-punched the teen, breaking his jaw.
Bonds is also accused of joining in the attack.
The employee was taken by EMS to St. Mary Medical Center where he remained for a week.
Police said he required surgery for a fractured jaw and injuries to his teeth.
McCoy has been charged with Aggravated Assault, Simple Assault, Recklessly Endangering Another Person, Criminal Conspiracy, Disorderly Conduct 2 counts and Harassment.
Bonds has been charged with Simple Assault 2 counts, Criminal Conspiracy, Disorderly Conduct 2 counts and Harassment.