Alan is right...Trump does have Narcissistic Personality Disorder (or a like condition). It is part of what will be the end of him.
Trump has been trying to obstruct justice almost from Day 1 in office, so OF COURSE he brought up changing the prosecutor with Whitaker. He is guilty as sin of a number of things, he can't believe that others aren't willing to protect him like people always did before he became President, and the loyalty ask that he has made to several people is ridiculous.
He's an odd person. He's a bad person. He's a criminal person.
He is going to prison.
Mueller is coming.
The clown is done.