Kilmer graduated from high school in 2013. He intended for his acting job on Palo Alto to be a brief project before applying to colleges, but after the film's production he decided to enter acting full-time. In April 2014 he filmed Len and Company with Juno Temple and Rhys Ifans. He played Chet, a young film projectionist who proves vital to the investigation in the 2016 neo-noir crime buddy comedy film The Nice Guys, which was written and directed by Shane Black, who had previously worked with Jack's father Val on the 2005 crime buddy comedy Kiss Kiss Bang Bang.
The film was released in May 2014 to mostly positive reviews, and Kilmer's performance was described as "formidable", "naturalistic and sincere".
