Hi haze1434, what kali iso did you put on the usb?
I've just got an acer chromebook 13 as well and have managed to dd the "Acer Chromebook (Nyan)" iso to my usb. However, after booting up and pressing ctrl+u i get some text on screen then it just freezes :[
I'm currently downloading just the regular "Kali Linux 32 bit" iso however I have my doubts that this work.
Many thanks,
and thanks to the other guys in this thread as well! :)