“Chapter 27,” filmmaker J.P. Schaefer’s drama about Mark David Chapman and his days leading to the murder of John Lennon, outdistanced all specialty releases with earnings of $13,910 for Peace Arch Entertainment at New York’s Angelika Film Center. “My Brother Is an Only Child,” Italian director Daniele Luchetti’s 70’s-set family drama for ThinkFilm, earned $9,357 at New York’s Lincoln Plaza Cinemas. “Alexandra,” Russian filmmaker Alexander Sokurov’s war drama for Cinema Guild, earned $9,401 at…