Jem Aswad Senior Music EditorIt wasn’t all that long ago that Michelle Zauner, the creative force behind shoegaze-pop act Japanese Breakfast, was singing about the idea of becoming “Jimmy Fallon big.” The track from 2017’s “Soft Sounds from Another Planet” may have seemed like wishful thinking at the time, but Zauner’s tongue-in-cheek lyric came full circle in March when the band hit “The Tonight Show Starring Jimmy Fallon” to make Japanese Breakfast’s late-night television debut.The singer