I like:
pecans & dried apricots
olives (the good kind--pricey!) and smoked cheese. Or tomato juice. Homemade bread is a great companion too, but of course that has more carbs.
Frog eyes (spread cream cheese on deli ham, wrap it around a pickle, slice it. Of course each ingredient is processed, but other than the ham it's all good.)
Higher carb but complex carbs, and homemade so less processed. These do require more effort. I salt everything liberally.
Homemade chips-- corn tortillas cut into quarters and deep fried. Excellent with an avocado cut up then sprinkled with lime juice and salt.
Bread sticks (a bread machine helps. Use some wheat flour to corn flour to offset the white flour.)
Cheese crackers (from the More with Less cookbook).
2009 Trek 7.2FX WSD, brooks Champion Flyer S, commuter bike