Constructor's CommentsThe inspiration for this puzzle was the persistence of the phrase "nothing burger" on cable news television over the last year or so. If only they'd update the menu. . . .
The trick was coming up with other junky food modified by words or phrases that make the resulting meal "insubstantial." Ultimately, BIG GULPS OF AIR was the key to being able to lay out the grid in a workable way. And while it's the least "in the language" of the theme answers, it's also my favorite mental image.