Newly single Jonah Hill was spotted cozying up to a pretty blonde over dinner Wednesday night at Isola Trattoria & Crudo Bar at the Mondrian SoHo. “Jonah walked in with a group of guys and two girls around 10 p.m.,” says a spy. “He was sitting next to an attractive blonde for the majority of the meal and kept whispering in her ear. He had a fedora on and seemed very low-profile.” The “Superbad” actor split up with Dustin Hoffman’s daughter Ali last month.