99% of people disagree with me but I'm still convinced that Chris knows the CPU goddess stuff is a larp. It seems like the kind of escapist fantasy he would really enjoy. Plus, he wasn't even great at it - he would regularly screw up and say things like "I, uh, I mean momma" when Sonichu was supposedly possessing him; indicating that this wasn't a True and Honest belief. He didn't start with the over-the-top Jesus stuff until Heilberg floated the idea of insanity being a mitigating factor in the crime. It seems like the type of ham fisted strategy Chris would employ, since claiming to be Jesus is one of the most stereotypically crazy things someone can do. I also doubt that Chris developed schizophrenia this late in life, which would be rare. Schizophrenia almost always has an onset between 18 and 35. Chris also had an actual psych eval back in the PVCC days and they didn't find that he had any kind of delusional disorder, just hardcore autism.
Additionally, Chris seems very much aware that sex with Barb was wrong given that he tried his best to conceal it. Usually when delusional people do bad things which they think are right, they don't take steps to hide it and are even proud of it. After all, they performed a miracle so why be secretive about it?
I guess none of us can know for certain, but the one thing that is true without a doubt is that Chris needed some kind of psychological intervention since PVCC.