Carpet won't eat- confused

[Will0W783]

I have an adult male carpet python named Voodoo of unknown breeding and origins. I got him at a reptile show about 5 months ago, and he was a ravenous eater for me. He'd eat anything I put in front of him, and I had him on f/t medium rats, one a week. I recently had a mite infestation, and did the Nix treatment on all my snakes. So they went three weeks without being fed during the treatment. I fed again last night. All the other snakes ate, but Voodoo seemed only interested in coming out of his cage. I left the f/t rat in with him for an hour, but he didn't so much as sniff at it. So I removed it. Tonight I brought him home a live rat, and again he showed no interest. I removed it as soon as it started chasing Voodoo's tail. So now I have a rat I don't know what to do with a carpet that seems to have forgotten how to eat? Any advice?