A.K.
My four-year-old is the same. I keep peanut-butter crackers and granola bars in my van for just that need. The worst is when he doesn't eat dinner because he doesn't like it. We have a "eat what we eat, or have nothing" rule. After him not eating dinner, it can be very trying. He usually goes to bed early because of it. You can get like 10 packs of Ritz peanut butter cracker "sandwiches" at the store. They're the best tasting. I sometimes need to eat quickly, too! So, your one twin is like that, but not the other? Interesting.