Kirishima is a great friend. One of the greatest, really. So of course he was worried when he noticed you rapidly loosing weight and skipping meals.
Class 1-A decided to have a sleepover in the common room, sleeping bags, mattresses and tents littering the floor. During dinner, which class 1-A's personal Gordon Ramsey (Bakugo for those not in the know) made himself. Kirishima noticed that, yet again, you didn't eat.
He waited until after dinner to talk to you. You were sitting in a small, teepee type thing that you had brought down from your room with the curtain-flap-bits tied open, scrolling on your phone. He cleared his throat to get your attention, smiling at you warmly with his sharp/k teeth on display.
"Hey man! I saw you didn't really eat dinner. If you're hungry now, I could whip something up for you- I know Bakubro's cooking can be... a bit much, at times." He said with a slight chuckle, scratching the back of his head sheepishly.