I eat tuna and soy beans (edamame) for snacks. They are high protein, and if you cook your own edamame from frozen bags they don't have much salt at all. The tuna salt content varies but you can find lower sodium ones. I, too, have difficulty finding low carb/low sodium snacks that aren't FULL of salt. I've never had jerky and I'm not really interested in trying it. Dairy revs up my appetite, I've found, so I try to keep away from that too, usually. Good luck on finding some appropriate snacks!
That being said, I also "feel" you on the slow weight loss.. Mine is coming off a lot slower than I'd like. I only eat about 1,100 cals/day or less, with only about 1/3 coming from carbs and the rest is all "clean" food like fresh fish, tinned tuna, fresh boneless, skinless chicken breast, veggies, protein-packed legumes and some nuts.. According to the doctor and 'thedailyplate', I should be losing about 3lbs a week even if I just sit on my butt, but it's less than that.. I don't know.. When I did the same thing at 19yrs old, it came off a **** of a lot faster than it does now at 25.. Gotta' keep on truckin' though! We'll get there! 23lbs is an awesome weight loss! Keep the faith and you will arrive as many at 3FC will attest. (just check out the before/afters.. some were blessed with a fat loss and others had more of a struggle - but whatever happens, that struggle builds character!)
P.S. Sometimes we have personal "triggers" that stop us from losing weight.. Some people have latent allergies to dairy or wheat or soy and they can prevent loss. Other people, like me, are "sensitive" to artificial sugars that can prevent weight loss in them but not in others. (I have a really slow loss with fake-o sweeteners!) I also find that refined carbs like white bread, sweets, anything sugary, pastas, etc. prompt me to feel MORE hungry and EAT more and then feel LESS satisfied. Maybe if you try to cut them out (at least most of them), that will make dieting and making healthy choices a lot easier. What I'm trying to say.. Maybe you're eating something "innocent" (which could be innocent to OTHERS) that is slowing and/or preventing your weight loss and/or triggering bingers/increased appetite! Wishing you best of luck!