Walker played in four games during his true freshman season before redshirting the rest of the year.[4] He was named the Nittany Lions' starting left tackle during training camp before his redshirt freshman season and started all 13 of the team's games.[5] Walker was named third-team All-Big Ten Conference after starting all nine of Penn State's games in the team's COVID-19-shortened 2020 season.[6] As a redshirt junior, he started ten games and was named honorable mention All-Big Ten.[7] After the season, Walker announced that he would forgo his remaining collegiate eligibility and enter the 2022 NFL draft.[8]
Walker was selected by the Green Bay Packers in the seventh round (249th overall) of the 2022 NFL Draft.[11] On May 9, 2022, he signed his rookie contract.[12] He saw his first NFL action on December 25, playing four special teams snaps in a Week 16 victory over the Miami Dolphins.[13]
Walker started his first NFL game on September 17, 2023, during a Week 2 loss to the Atlanta Falcons, replacing an injured David Bakhtiari at left tackle.[14]
Walker entered the 2025 season as Green Bay's starting left tackle, winning the job over Jordan Morgan.[15]
Carolina Panthers
On March 14, 2026, Walker signed a one-year, $10 million contract with the Carolina Panthers.[16]
Personal life
In January 2026, Walker was arrested on firearms charges in New York's LaGuardia Airport. Police said that Walker voluntarily presented his firearm for proper inspection, but did not have proper credentials. Walker's lawyer said that Walker's out-of-state firearm license is not recognized in New York and he expects all charges to be dismissed.[17]