hehe ye I had that with one of my beardies. Just give it some time and leave it alone- in terms of handling. They will soon get used to the fact that we are not big scary monsters that are trying to get them. My little one that hissed and launched at me every time I walked past settled right down.
I used to always laugh, it seemed like he was trying to show off- try and let me know how aggressive he was

scary!