rabbit behavior

IMy question may ne a little strange. I have had my rabbit for 2 years now. She eats plents of greens, fruits and veggies. She gets the right amount of hay and pellets. However for the last few months she has been tormenting my parents and I for people food. I've never heard of a rabbit that does this. If she so much as hears the crinkle of a bag of chips she is right there in yopur lap trying to get the food from your mouth. We do not intentianally feed her these things but she steals it from you. She has tried cheeze its, peanuts, cherry twizzlers, lemon itallian ice, sunflower seeds, brownies, potatoe chips, bread sticks. As I said we do not give it to her, but she finds a way to sneak a bite and jumps all over the bag or box of what you are eating to get at it. She is relentless. Have you ever heard of a rabbit behaving this way??
   
Debra