It could have developed over time. Honestly, if hes eating the baby food, thats great. Do u have a vet? I suggest making an appointment ASAP and if hes eatimg the baby food, take your crickets, buy a baby bullet, and put fresh fruits and veggies and crickets. This way, the beardie is getting his essential waters, vitamins, minerals, and protein. Take a superworm or 2 ( large) and purify that 2 times a week in place of the crickets. This way, hes getting the healthy fat for him. Is he defecating? How is it if he is?