I've seen the movie Fight Club, but I haven't read the book. I can help you analyze any work of fiction from a feminist point of view, though.
First, feminist criticism isn't something that is in a work of fiction. It doesn't play a role in a normal work of fiction. Feminist criticism is a way of looking at or analyzing a work of fiction.
When you analyze the novel from feminist critical perspective you will look for several things:
- Is the writer male or female, and how does his/her gender determine what he/she writes?
- What roles do women have in the work? Are they more than just decoration? Do the roles have substance?
- How are women portrayed? Are they independent? Do they have value in themselves, or are they dependent on males? Are they put on a pedestal, abused, or self-determined?
- What does the presentation of women in the work reveal about the societal views of women, in the society the work originates from?
This is not a complete list, and of course studying any work of fiction doesn't really come down to a list. But I hope this will help.