Nagatoro wanted to make Senpai some food so they could swap and got jealous when he shared some of his food with her friends. You can see how happy she is when Senpai says her food tastes good. That's adorable.
It's cool that Senpai shows that he's got some skills outside of drawing and good on him for not wanting to come off as desperate in directly asking for Nagatoro's tamokoyaki.
While I like Yoshi and Gamo being wing-women for Senpai and Nagatoro, I am curious as to where the sleepy eyed friend is, unless she's still trying to dismantle that group of boys from the last chapter.