When a former priest on death row breaks out of prison, all he wants is a fresh start, but his serial-killer split personality only makes it harder for him to evade the FBI… and the lethal injection.

If the defining characteristic and flaw of the protagonist is a split personality, then that flaw has to be the major plot driver, the major source of dramatic tension. What's the dramatic tension in wanting to buy a house and how does that relate to his flaw?

If the defining characteristic and flaw of the protagonist is a split personality, then that flaw has to be the major plot driver, the major source of dramatic tension. What's the dramatic tension in wanting to buy a house and how does that relate to his flaw?

"...his split-personality breaks him out of prison, and when he arrives in a new city, he finds a house and falls in love with it..."

This is a series of events part of a sequence and not a single significant event that occurs out of the ordinary which changes the life of the MC in manner that motivates him to need a specific goal.

Secondly the inciting incident normally needs to happen to the MC without their control. If the MC did the inciting incident to him self, in the way you are suggesting, then it would have happened regardless and there fore is not an unusual event.