Barker's decision comes just one day after an official visit during the annual Blue-White Game.
Christ was one of two non-quarterbacks to play on both teams at the 2023 Blue-White Game.
"Whether they are here with us today or from far away, we all have a connection to one symbol that makes our love for Penn State grow."
Between producing six quarterback hurries, five sacks, and one interception, Manny Diaz's defense stole the show at Blue-White.
The Texas native's five-catch, 80-yard showing helped elevate the Nittany Lions' offense during his Blue-White outing.
Presumptive quarterback starter Drew Allar finished the matchup with 202 yards through the air on a 63% completion rate.