you could just use one event and one input if you wanted. then when you call the event you just input how much to decrement or increment the hunger value.
or again using one event you could have a bool input that tells if the hunger change is positive or negative and if negative multiply the input value by -1.
Opinion: when it comes to one vs two events in this instance it wouldn’t be a big issue performance wise since its so few nodes and i imagine it won’t be called a ton. as for readability well that’s subjective but to me i’d think one event would be easier to keep track of and modify if needed (no duplicate script). that said where you call the events maybe a little harder to keep track of (two of the same event but with one being say +1 and the other -1).