Albert Barnes Commentary 2 Kings 15:34

"And he did that which was right in the eyes of Jehovah; he did according to all that his father Uzziah had done." — 2 Kings 15:34 (ASV)

Jotham imitated his father in all respects, except for his impious usurpation of the priestly functions (2 Kings 15:5 note; 2 Chronicles 27:2).