Why are you vegetarian? Though there are of course legitimate reasons to stay away from meat, it can also just be an unhealthy part of your need to control what you're eating.
What do you consider weird about vegetarian cooking?
When limiting your calories through strict diet and purging, you really have no room for low-nutrition items like regular chips. Make your snacks healthy. Do you like hummus? It's inexpensive and easy to find at grocery stores, and tastes good on pita bread. They're a high-protein snack to help your body get past the lack of meat.