So, he's just lunging at the phone with excitement then. I had it all wrong.
It seemed to me there was some boundary Chad was testing when he showed the Elvis/Las Vegas picture, because he seems a bit nervous (and yet excited), and Ranjit seems to show a bit of concern at his choice of outfit. When the South Beach picture comes up, it is as if Chad has crossed a line and provoked Ranjit into a rage.
Oh, and just in case I'm right, and Ranjit was insensed by Chad's last slide, I think he deserves everything he got. I think he sent Chad on assignment because he wanted to get rid of him for a while. Chad is clearly more popular with viewers and I sense some jealousy.