New Experience

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I recieved a bearded dragon a short while ago but most of my experience has been with snakes. The dragon seems healthy but some things I've read have caused me to worry I think he is much smaller than he should be for his age. He is about a year old and is only about 4 inches long. Is this too small?? I have food available constantly in his cage (juvelile bearded dragon pellets) as well as different vegatable leaves (collard greens, parsely, etc.) and I offer him crickets every other day or so he generally eats about six of them in a sitting. What I am worried about is that he has not grown much in the time I owned him (8 months) Why is he still so small?? and when will he get to be the fully grown lizard?
any advice will be appreciated
thanks in advance
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