He looks like a juvenile, in which case he's going to eat a lot more live feeders than an adult would. Crickets, roaches, or phoenix worms are best as staples. Superworms shouldn't be fed until a beardie reaches total length of at least 15 inches, otherwise impaction is a big risk. Also, be sure to provide UVB and the proper heat gradient (100-110 degree basking temp, 70-85 on the cool side).
I love beardies!