AJ Forbes was an Omaha World-Herald All-Nebraska and Lincoln Journal Star Super-State offensive lineman for Bellevue West High School. He helped the Thunderbirds to the state quarterfinals in 2017 while paving the way for a rushing attack that racked up over 2,000 yards. In 2016, Forbes was part of a Class A state championship team and served as one of the lead blockers for current Husker running back Jaylin Bradley. Forbes also made 43 tackles, including two sacks, as a junior in 2016, when he was named honorable-mention all-state by the Omaha World-Herald. Following his prep career, Forbes represented the North Squad in the 2018 Nebraska Shrine Bowl.