I'd search for 'Food Should Taste Good' chips in your local supermarket. If you can't find any there, you can order directly from their website, or from Amazon. www.foodshouldtastegood.com/#/home/
My personal favorites are the sweet potato chips, both the kettle cooked and tortilla varieties. There's a great selection, though, including chocolate, cheddar, jalapeno, salt & pepper, and others. You can find all the nutrition information for every kind that they produce on their website. These are good, IMO, so long as you measure out the 1 oz serving size rather than repeatedly dipping back into the bag.
If you like popcorn, I'd also keep an eye out for the Jolly Time 100 calorie bags. They taste good, are relatively low-sodium, and it's easy to regulate portion as each bag is meant to be an individual serving.
You also might like peanut butter spread on plain rice cakes, or fruit dipped in peanut butter. Just be mindful of how much peanut butter you're scooping out as the calories can add up quickly.