Eh, they're just eating snacks.
Although I WOULD like to see a Shoto / Kaminari, and a Kirishima / Tsuyu team-up, in one of those random match-ups the school seems to love for exercises. I'm curious how they'd do.
(Which brings up a related matter. In the Final Exam, Practical test, students were matched with each other specifically due to grades, powers, and attitudes, and against specific teachers. So you had Momo and Shoto against Aizawa, Mineta and Sero against Midnight, and - almost disastrously - Deku and Bakugo against All Might, among others. All of this was supposed to help the students improve, even if they failed. But by what perverse logic were Aoyama and Ochaco not only paired up with each other, but pitted against 13? The mind boggles.)