I've owned a mated pair of Beardies and the male became an absolute hormone induced rage machine lol.
Flatten out, did the beardie sumo wrestler leg stomp, mouth became bright orange, beard fully expanded and jet black and would head bob like a mofo.
I had them for about 9 years and I do remember he grew out of it.
Btw they produced many clutches and each time around breeding season he would get more aggressive...
Hope that helps.