From Wikipedia:

“LSU Tigers (DC) – Second tenure Edit
On Jan. 27, 2020, Pelini was named LSU's next defensive coordinator, replacing Dave Aranda.[22] In his first game returning as defensive coordinator for LSU his defense gave up a one game SEC passing yard record against Miss State. [23] However the next week against Vanderbilt, the defense only gave up a touchdown. The following week and in only his third game returning as LSU defensive coordinator his defense gave up 586 total yards and 45 points in a 45 to 41 loss to Missouri. In his first three games returning as the LSU defensive coordinator the LSU defense surrendered a school record 96 combined points. Pelini was dismissed from his position on December 21, 2020.[2”