I Was A Teenage Werewolf (1957)

Michael Landon from “I Was A Teenage Werewolf,” a classic AIP production from 1957.

From Wikipedia:

I Was a Teenage Werewolf is a 1957 horror film starring Michael Landon as a troubled teenager and Whit Bissell as the primary adult. It was co-written and produced by cult film producer Herman Cohen, and was one of the most successful films released by American International Pictures (AIP).[1] It was originally released as a double feature with Invasion of the Saucer Men.