After graduating from Bountiful and prior to attending BYU, he served a 2-year mission for the Church of Jesus Christ of Latter-day Saints in Hamilton, New Zealand, from 2015 to 2016.

[1] Christensen redshirted his true freshman season at BYU after returning from his mission.

[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.

[10] He signed his four-year rookie contract with Carolina on June 24, 2021, worth $5.16 million.

[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.