Thanks both of you for your useful answers and tips.

I suspect that the problem was the "Zoomed Natural Juvenile Iguana food" which made her to eat a lot of vegetables, very active and aggresive.

I stopped that food and she looks very calm(almost lazy), less aggresive and eat a little bit less.

Instead of giving that food in a daily basis I'm going to change it to a weekly and reduced portion becuase it contains several minerals required for healthy growing.

Oh, BTW I already read the Iguanas for dummies book but I'll try the other suggested.

A huge green thank you from "Chole" and me.