The 18-year-old Sharknado 2 actor was joined on the carpet by his girlfriend Ryan Newman, though they posed separately.
“Awesome day yesterday at @knotts!!! Crazy roller coasters, crazy friends, and crazy fun! #knottsironreef,” Ryan tweeted earlier in the week.
Jack wrote, “We came. We conquered. Thanks for a great day @knottsberryfarm!! We’ll be back soon for #knottsscaryfarm”
FYI: Ryan is wearing a Nasty Gal dress and Steve Madden shoes.