It is very doubtful that this will happen, and we've been over this a lot. The bar for NGRI is very high. Yeah, Chris is crazy, but for NGRI they'd have to prove that he had no capacity to understand that he was committing a crime. While it's likely they will push that Chris has some form of *diminished* capacity, it's a tall order to prove that he did not have the capacity whatsoever.
Unless Heilberg, the prosecutor, and the judge are 100% on board with accepting an NGRI plea, but CHRIS would almost certainly fight that, and it would be a bad look for Heilberg.
EDIT: The most common NGRI verdicts today come from people zonked out on drugs. They still get convicted for taking the drugs in the first place, and are still responsible for the effects of what happened, but they aren't convicted of the crime itself.