Cheese crisps are great. Lots of versions on here. I like them with low-fat shredded 4-mexican cheese microwaved until it is just hard.
I haven't tried the turkey pepperoni recipe yet - but that looks like a good crunch. I have some in my fridge now. And chickpeas in my cabinet
And I agree that veggies are not the same! But you might try the cauliflower popcorn. It isn't crunchy, but it has a good saltiness to it and you eat it more like a snack of chips or ...well... popcorn.
I also ate lots of Triscuits last time I was in Phase II. They taste amazing when you are OP. Salty and almost sweet. I like the thins because you get more per serving. I try to eat them with spreadable cheese to add protein. I had to really watch my portions and that I didn't eat them more than once a day. Melba toast was okay too. (Check labels to be sure they fit the plan; I don't remember how careful I was at the time.)
Snacking is the area I have to be most cautious; I have much more control and willpower with meals.