Christensen redshirted his true freshman season at BYU after returning from his mission. He became the Cougars' starting left tackle going into his redshirt freshman season and started every game for them over the next two seasons.[1][2] As a redshirt junior, he was named a consensus first-team All-American.[3][4][5] Following the end of the season, he announced that he would forgo his remaining collegiate eligibility to enter the 2021 NFL draft.[6]
Christensen was selected by the Carolina Panthers in the third round (70th overall) of the 2021 NFL Draft.[10] He signed his four-year rookie contract with Carolina on June 24, 2021, worth $5.16 million.[11] He was named a backup tackle as a rookie, but started six games due to injuries.
In 2022, Christensen was named the Panthers starting left guard, starting all 17 games. In the season finale against the New Orleans Saints, he suffered a broken left ankle.[12]
Christensen returned to his starting role in 2023, but suffered a biceps injury in Week 1 and was placed on injured reserve on September 13, 2023.[13]