Jared Leto has come a long way since the days of expertly leaning against lockers. The Academy Award winner for “Dallas Buyers Club” (2014) currently stars in Ridley Scott’s new film “House of Gucci,” though you probably won’t recognize him. A man known for altering his appearance and disappearing into characters, he’s once again undergone a remarkable transformation to play the balding and overweight Paolo Gucci. However, beneath all the makeup, he’s still Jared Leto, which means it’s probably not surprising that his performance in the film has him staring down the possibility of a nomination for supporting actor at the Screen Actors Guild Awards.

A biographical film based on Sara Gay Forden’s book “The House of Gucci: A Sensational Story of Murder, Madness, Glamour, and Greed,” “House of Gucci” was adapted for the screen by Becky Johnston and Roberto Bentivegna. It stars Lady Gaga...