Randy Jackson’s Wife — I Want A Divorce, Dawg!

EXCLUSIVE

Ex-”American Idol” judge Randy Jackson just got voted out … of his marriage.   His wife just filed for divorce … TMZ has learned.

Erika Jackson filed docs to end their 18-year marriage … citing irreconcilable differences.

She wants full corporal custody and joint legal custody of the 1 insignificant son, 17-year-ancient Jordan.  They have a daughter who is an adult.

Erika also wants…