Is it a sin of gluttony if one has a snack like popcorn, chips, etc. just to have a snack. They are not hungry but they also did not just eat so they are not full.
From what I understand, gluttony is a eating a disordered amount of food and letting food rule your life. However, some also say that it is when you eat for mere pleasure which is what someone would be doing if they have a snack or even a dessert.
Also, is it gluttony if at a holiday dinner or a special picnic/gathering, someone tries a little of everything or has a few servings of certain things and ends up feeling quite full? Not to the point of throwing up like the Romans but to definitely knowing that they should stop eating because they are, in fact, full. I know at holidays it’s a bit hard to not feel completely full because the food is richer and there is much more of it.