Ren barely refrains from rolling his eyes and goes back to methodically eating his own food, sans the pastry. He's never had much of a sweet tooth other than for a particular sweet his father had favored and now he won't eat it out of sheer spite. Since Corellian pastries aren't in evidence here, he'd allowed himself to have one and now Rey's taken it. Of course.

"You're just going to be sick after you eat all this food. There's no point in eating this much and just getting sick afterward. It won't even be worth it."