Oh my goodness! My dragons do this all the time, one does it so intensely she rolls over because she tilts her head so far over. I tried to imitate it to my fiance and my neck cracked so loud. Now I call it the "beardie look" when I work out. lol
mine will watch us eat and open and close his little mouth as if chewing and make swallowing motions....even if hes already eaten or its not time for his cup of buggies yet.....
mine always does the sharp head tilt hell be looking forward and then tilt! for a few seconds and then looks fowards again sometimes i've poked him other times its almost like he's checking up on me lol. such funny little fellows