Panther male head bobbing at me

Hey there. This is Huebert, my 10 month old ambilobe panther male. I posted a while back about his behavior of wanting to leave his enclosure, and got some good feed back. I lowered his basking temp to 87, made sure he has a gradient, and he has plenty of food variety available to him in his enclosure but really just doesn't seem hungry. He does eat his silkworms, but won't touch his dubia anymore. Recently, he's been wanting to leave his enclosure even more than before. And now when I look at him, sometimes he head bobs at me. What's with the bobbing?

I have a shelf above my computer desk with vines for him to explore, which is where he was when this video was taken. I'm usually about 4-6' away from him when it happens.