Every one said it is made to break in in three pieces, I suppose 5 pieces is pretty close considering at least it didn't shatter.
I didn't do anything weird, I don't know why it broke. The oven was at 425 and it had only been in their about 15 maybe 20 min. It has a warranty so I should be able to get a replacement. But it broke during the second use, what's up with that?