Definition of "schitzy"

I'm a little schitzy but not psychotic. Right?

2011, Ted Solotaroff, First Loves: A Memoir, page 105

He was bound to be a little schitzy. Kinky, born Richard, and his younger brother, Roger, who performs some business functions for his brother, are the sons of a speech therapist and an educational psychology professor.

1973 May, Texas Monthly, volume 1, number 4, page 95