Is it the same strain as your others? How old is she? Have you fed her anything? Soil you are using?
I really don't know from the pic so more information may help.
relax dude its ok. more info will help but i would say it has to do with the breeder that made the seed. when they cross different strands sometimes they have a hard time locking down all the traits they want the plant to have. so its in the genetics of the plant. it will be fine. i have a sweet island sk that is the same way. although it looks funny at the start it will be fine. in fact mine yelded 14oz off one plant in a scrog.