baby bearded dragon not eating

Question
I got two baby bearded dragons about 5-6 months ago. I named one pancake and one Pajamas. At first they were the same size then PJ began to grow but not pancake. Pj is now huge and a regular sized beardie at 6 months old, but pancake is only 2inches body length (not including tail length) Each Night I have to hand feed him and stuff crickets and lettuce in his mouth but he barley grows. My other 4 bearded dragons are healthy and doing fine after almost 5-9 years, but not pancake. I was wondering why he was not eating and was hoping somebody could help me.

Answer
Hello Eva,

Those are cute names for your dragons.
Are they housed together?  If so, Pajamas sounds like he is dominating Pancake.  Are they both males, two females or a male & female?
Do you use a UVB light for them?  What are the temperatures in the tank, & what type of thermometer do you use to measure the temperatures with?  A round stick on type, a digital probe or a temp gun?  
I would separate them if you have them housed together, or Pancake will most likely not make it much longer.  If there is a huge size difference, he might be attacked by Pajamas.

Tracie