Chabert played the role of Cosette in "Les Misérables" on Broadway before taking the role of Claudia Salinger in "Party of Five". Chabert made her big-screen debut in the late 1990s, starring as Penny Robinson in the space thriller "Lost in Space" (1998). Since then, she has been the voice of Eliza Thornberry in the animated series "The Wild Thornberrys", and has voiced Eliza in two films, "The Wild Thornberrys Movie" (2002) and "Rugrats Go Wild" (2003). She then had a supporting role in the parody film "Not Another Teen Movie" as Amanda Becker. She provided the voice for the title character's daughter Aleu in "" (2002) and she provided the voice of Meg Griffin, unbilled, for the first season of the animated sitcom "Family Guy" (1999), after which Mila Kunis took over the role.