I just had my wisdom teeth removed on Thursday (all 4 removed). I have been eating semi-normal foods already (today is monday, and I ate some normal foods yesterday). So, I would give it at least 5 days before you start eating crunchy food, like chips, etc.
Also, remember to try to keep any food away from the extraction sites. This will help to avoid infection.
Hope this helps!!!
I had one wisdom tooth pulled a month ago. My oral surgeon told me that I should wait at least 24 hours before eatting solid food. After that, I could start eating them as soon as I felt comfortable doing it. I started to eat "real food" the next day. It was about a week before I felt comfortable chewing on that side again. I wasn't allowed to eat chips, popcorn, nuts, pretzels, or anything like that until my stitches came out (one week later) though.