Chojnowski's work has evolved over the years through a period of geometric abstraction to incorporate his figurative academic training. Throughout his career a distinguishing characteristic has been the use of nontraditional media and tools in his art making. His current work, images burned into paper and wood, is an extension of that predisposition; these burned drawings evolved as a result of his conscious effort to embrace art historical traditions while rejecting the traditional processes. In the early 90's Chojnowski was working on wood panels with wax and raw pigments when he found he could burn marks into the surface of the wood using torches. Abandoning abstraction, Chojnowski began burning and scorching wood and paper to create his images. He first showed the fire drawings in Atlanta in 1993. A seminal work from that first exhibition is Atalanta. The critical and curatorial response to his work lead to Chojnowski receiving an Alternative Visions Grant in 1994 and a Visual Arts Fellowship from the National Endowment for the Arts in 1996. With these Chojnowski created a series of large-scale narrative works on wood panels such as River of Blood / Bridge of Hope, and Searching for Religion at Century's End that along with other large works were part of his solo show at the Chattahoochee Art Museum in LaGrange Georgia in that same year. In 1997 he returned to the Berkshire Hills of western Massachusetts where he continues to reside and work. Chojnowski had his first solo exhibition in New York at Bridgewater/Lustberg & Blumenfeld Gallery in September 1999. In this exhibition he introduced the first works from his ongoing series of Nocturnes inspired by his long-standing interest in the work of James McNeill Whistler. Noteworthy is his use of water in the execution of the works in this exhibition softening the image and emphasizing the sense of light as in American Nocturne: Heading North.

In 2006, Chojnowski participated in a three-person show titled New Visions, at The Harrison Gallery, Williamstown, Massachusetts. Contacted by a staff on the set of the Scott Hick's film No Reservations in early 2007 he worked closely with production designer to provide the film with nine works for the set of the restaurant in the film and was listed in the closing credits. Berkshire Living magazine published a report of this as one of their SceneAround features. A solo exhibition titled Natural and Unnatural Disasters took place in August at Kidder Smith Gallery in Boston that featured the artist's narrative works on paper and wood. During 2008 Hubert Gallery in New York held a solo exhibition titled Town and Country in June; a two person show titled Turn and Burn followed at the Gilchrist Gallery in Cumberland MD; and a solo show of selected works at Mason Murer in Atlanta ended a busy year of exhibitions. In September of 2009 Chojnowski participated in a group exhibition titled Great Pretenders: An Exhibit of Art Fakery at the Carrie Haddad Gallery in Hudson, NY followed in early spring of 2010 with participation in another group show again at the Carrie Haddad Gallery titled Painted City. The calendar year ends with Chojnowski's inclusion in Pulp Friction a group show of artists working primarily on paper. The exhibit is hosted by the James Gallery in Pittsburgh.