Chon was educated at University High School in his home city of Irvine in California, where he played saxophone in the marching band, followed by the University of Southern California in Los Angeles, where he majored in Business Administration.
In 2016, Chon wrote an editorial for NBC about the racism he faced in Hollywood roles and auditions.
He is best known for his work with film director David Lynch, appearing in Mulholland Drive (2001) and Inland Empire (2006).
He is also known as a screenwriter for films such as Tropic Thunder, Iron Man 2, Rock of Ages, and Zoolander 2. His mother, Phyllis Grissim-Theroux, is a journalist and author who worked for The Washington Post, and his father, Eugene Theroux, is a lawyer at Baker & Mc Kenzie in Washington.
In January 2015, he began uploading edited vlogs to his You Tube channel on a weekly basis.
Since November 2015, he has uploaded edited vlogs to the channel on a daily basis.
He also creates short comedy videos on You Tube with his friends.
He has appeared in videos on Nigahiga's You Tube channel.
He starred as the central character, Jeff Chang, in the film 21 & Over in 2013.
He also appeared in the independent film Innocent Blood that same year.
In 2014, Chon appeared as a lead character in crime drama film Revenge of the Green Dragons, which was executive produced by Martin Scorsese.
In 2015, Chon starred as Sid Park, the trouble-making main character influenced by rocker culture in the independent film Seoul Searching, directed by Benson Lee, which made its premiere at the 2015 Sundance Film Festival.