Soon after earning his BFA, Chiasson landed the role of the young idealist Marius in the National Tour of Les Misérables (musical).
He played multiple roles, including Squeegie Man and Steve, in the original Off-Broadway production at New York Theatre Workshop the following year.
The show’s creator, Jonathan Larson, died suddenly the night before the Off-Broadway premiere, but the production carried on and became a hit.
Chiasson originated on Broadway the role of Armand St. Just in THE SCARLET PIMPERNEL and Corporal William McEwen in The Civil War (musical).
During his tenure at Reprise, Chiasson presented acclaimed artists such as Barry Manilow, Barbara Cook, Patti LuPone, Betty Buckley, Ray Romano, Martin Short, Seth Rudetsky and Sutton Foster in concert in venues throughout Los Angeles including the Saban Theatre in Beverly Hills and UCLA’s Royce Hall.
These two state-of-the-art theater complexes consist of two buildings in two locations, each having a 650+ seat Mainstage, a 100-seat Black Box, professionally equipped scene and costume shop, and all requisite support spaces.
In that time he worked closely with Bobby Moresco, winner of the 2005 Academy Award for Best Original Screenplay for Crash (2004 film).
Projects have included the television series The Black Donnellys for NBC and the adaptation of CRASH for Starz (TV channel).
He is a Co-Producer of The Kings of Appletown starring the Sprouse twins famous for their work on Disney Channel’s The Suite Life of Zack & Cody.
Chiasson co-wrote “Hands Holding Hands” with Nashville songwriter, Chris Roberts, famed for One Flew South, which premiered in BRAVE NEW WORLD, American Theatre Responds to 9/11, at The Town Hall (New York City) and received radio play across the U.S.A. Their song, “Sweet Mystery”, appears on LML Music In Good Company.