Is 123 lbs fat for a 11 year old?

no well I'm 11 and 125 but you're still growing trust me in about 1-2 years you'll get taller and thin out I'm already starting to. if by thirteen you're still a little chubby then maybe everyday take a walk with some friends or something other then that you're fine.

p.s. you should love your body no matter what everybody else says if god made you that way then god has plans for you. always believe in yourself and NEVER give up on your dreams.