Hi, welcome to the forum! I think your frog looks great, they generally look pretty chubby, even compared to many other species of frogs. He looks to be in fine shape for a pacman frog to me. They spend much of their time burrowed, so its behavior is pretty normal. Even for a male, looking at him next to that adult dubia I don't think he's quite an adult yet, I think he still has a little growing to do. Eating daily or every other day(or a combination thereof) is pretty common for growing frogs, so I think that's fine for now. Congrats on the new frog! Also, those snakes of yours sound cool.