When I get the munchies I kind of have the same problem is I have junk food. I can eat infinite Skittles and cheetos without blinking an eye. The key is to find what "primal craving" these snacks are engineered to hit. For sweet treats like Skittles I like to replace with grapes especially a fancy grape. For salty my replacement is usually nuts. The best thing I have found for all purpose is a homemade trail mix. The nuts, dried fruits and occasional chocolate thing is amazing. It's satisfying, a great sensory experience, the variety really hits my high brain and it's mostly healthy. I have a huge contain that I refresh when it gets low. You can put in anything in it and easy and cheap to get the single variety nuts. Even fancy nuts like cashews are cheaper in the long run. It's also makes you so thirst so make sure you got water but that also fills you up.