The Home Improvement star has reunited with his former on-screen dad Tim Allen in his sitcom Last Man Standing.
The former child star will play the role of Jon, a former diner worker turned upscale restaurateur in an upcoming episode entitled "College Girl."
This will be JTT's first TV appearance since his cameo on Veronica Mars in 2005.
After being touted as TV's biggest teen heart-throb, Jonathan decided to go back to school, enrolling at universities in the US and UK and graduating in 2010 under his original name Jonathan Weiss.
Let's hope this is not the last we'll see of old mate JTT.
View slideshow: 90s stars, where are they now?