Soon after graduating from Columbia College Chicago, McKenzie sent in a tape to Director Michael Arden and the creative team at Deaf West Theatre, with hopes of obtaining a job as an interpreter during the company's ASL-inclusive run of Spring Awakening. However, the Deaf West team saw his potential, and requested he audition for the leading role in the production—the radical atheist Melchior Gabor. He was given the role, and began rehearsing for the show in mid-2014. At first, McKenzie was the only member of the hearing cast that was able to effectively communicate with their deaf and hard-of-hearing cohorts, thanks to his training in ASL. Deaf West's Spring Awakening originally performed at a 99-seat theatre off of skid row in Los Angeles, California from September 14, 2014 to November 9, 2014. It was McKenzie's professional theatre debut.