Jenelle Riley Deputy Awards, Features EditorAfter losing more than 75 pounds for Season 4 of “Stranger Things,” in which his character Jim Hopper was wasting away in a Russian gulag, David Harbour had one thing on his mind. “As soon as we finished my last shirtless scene, I sent my assistant to this great pasta place for lasagna,” Harbour recalls. “It only came in trays, so I gave her a little section and then I just took the whole tray and dove in like a maniac.” After battling starvation, Soviet guards and a Demogorgon in the hit Netflix series, Harbour is currently facing some truly scary demons — family. The actor is appearing in Theresa Rebeck’s latest play, “Mad House,” at the Ambassadors Theatre in London, running through Sept.