Notorious televangelists Jim and Tammy Faye Bakker get a mixed blessing of a big-screen biography treatment in Michael Showalter’s The Eyes of Tammy Faye (B-) with Andrew Garfield and Jessica Chastain in the lead roles. Chastain commands her every sequence and is the central protagonist as the preacher, singer and puppeteer who becomes an empathetic television personality despite her husband’s Faustian bargains leading to their public downfall. Showalter consistently struggles in this piece with tone; it’s never completely clear if this is serious drama, featherweight cautionary tale or historical diversion. Cherry Jones as Tammy Faye’s staunch mom and Vincent D’Onofrio as fellow Christian influencer Jerry Falwell also get some authentic acting moments as foils to the central duo. Chastain is the revelation here.