I started out munching on pork rinds mostly because the texture was similar to the snacks I was used to eating.
Now I only snack on sunflower seeds in the shell.
As a former smoker and compulsive eater, the seeds cover the hand to mouth, and the snacking thing. It's really hard to eat too many. Sunflower seeds are packed with nutritional goodies and have a nice macro profile of 77% F 13% C and 10% P.
Nice to have developed a positive addiction for a change.