Cut them up into bite size pieces to dull the worst of the noise, and give your neighbors earplugs? Outside of that, look into quieter healthy snacks like raw broccoli, cherry tomatoes, cucumber spears, bell pepper strips... there's quite a lot of variety! Consider adding a serving of hummus or peanut butter as a dip to your snacks for protein. Preshelled and halved nuts are healthy. You can even eat trail mix as long as you moderate the dried fruit and candies in it. Heck, roasted chickpeas are pretty good, and have a decent amount of protein. There are options if you are that concerned about being rude to your neighbors.

Figure out who it is. Leave them a note: "Bitch, your potato chips are deafening." Petty and passive aggressive? I know how to play that game!

Go rent a rabbit costume, see how they like it then.

People will complain about absolutely every-damn-thing. Tell them to get headphones. The note was rude and put there by chickens.

Try raisins - you can get them in big bags for baking, quiet to eat, fruit, and they keep forever if you seal the bag with a clip.

I was unaware that the only snacks in the world were chocolate or carrots and celery.

I have misophonia. Someone insisting on eating only crunchy snacks at the desk every day would make me miserable (and murderous). Make sure you're eating with your mouth shut. You'd be surprised how few people actually do that as a habit. And switch it up. There's lots of healthy snacks, and plenty that won't loudly crunch. Again, make sure you're eating slowly enough and with your mouth shut.

I think this can either be a FML or YDI depending on the circumstances... If you are loudly munching - like, properly gnawing - on carrots and celery at your desk throughout the day then I can understand your coworker, especially if it is otherwise a really quiet office environment. Those snacks can be loud, and like clicking a ballpoint pen it is a sound that just gets on your nerves. Though it is still immature to write a note instead of talking to you. However, if it was eaten in the lunch/break room or during lunch/snack times, then you have every right to eat what you want.

If other people can hear you, you are chomping way too noisy.