Not while he is having trouble with his bowels. Get some earth worms and feed those to him.
Read this Frog Forum - Pacman and Horned Frogs - Ceratophrys - Care and Breeding
You are not providing the proper home for your pacman. This will describe the setup you need to house your Pacman correctly. Johnny888 can help you find a Vet. Let him help you as well.
Follow my advice and keep us posted.