I just wanted to recommend Mediterranean Snacks Baked Lentil Chips as a decent high fiber and portable snack food. I tried them recently and now eat them on a regular basis. I like the sea salt and the cucumber/dill flavors. The pepper is a bit too peppery for me. They have 3 grams of fiber in 22 chips.
I was going to try Plentils, another type of lentil chips but the fiber content was lower.