Courtesy of Yannis Drakoulidis / Focus Features 2 stars (out of 4) Even delightful confections are sometimes best left at single servings. Like, say, Baklava. And My Big Fat Greek Wedding. After a lackluster 2016 sequel, talented writer-director-star Nia Vardalos has reassembled her bustling onscreen family for My Big Fat Greek Wedding 3. But if the second flick felt like a frustrating retread that failed to capture the charm of the 2002 original runaway hit, this outing just fails. Agreed that