The man who killed “American Sniper” Chris Kyle and his pal was in a state of pot-induced psychosis when he shot them but knew what he was doing was wrong, a forensic psychologist testified Friday.

Dr. Randall Price determined that Eddie Ray Routh, 27, doesn’t meet the state’s definition of ­insanity, the Dallas Morning News reported.

“He did know what he was doing was wrong, and he did it anyway,” Price testified, adding Routh that suffers from a personality disorder instead of schizophrenia.

Another expert for the prosecution said Routh has a mood disorder, not a serious mental disease.

Routh has pleaded not guilty by reason of insanity.