Is it like N Graphic Works to Read Before You Die? Are they all feminists? Memoirs? Or maybe, what's three underlying things about all the books you want to discuss? There's your topic. It might end up being something like GIRLS GIRLS GIRLS, but you see the idea.
(For the chickens, you could just make some happy chicken noises. Chicken words!)
graphic novels: focus?
(For the chickens, you could just make some happy chicken noises. Chicken words!)