The No. 2 seed Bison (12-1) will play host to third-seeded Georgia Southern next weekend.
Jensen scored on a pair of 1-yard sneaks, the last of which capped a 16-play, 80-yard drive to give the Bison a 24-0 lead with 7:23 left. He found Warren Holloway for a 38-yard score in the second quarter.
Chris Lum completed 25 of 52 passes for 288 yards and two interceptions for the Mountain Hawks (11-2).
SAM HOUSTON STATE 49, MONTANA STATE 13
In Huntsville, Texas, Richard Sincere rushed for 160 yards and two touchdowns on 11 carries as Sam Houston State piled up 428 rushing yards in beating Montana State in a Football Championship Subdivision quarterfinal game.
The top-seeded Bearkats (13-0) will host play host to Montana in the semifinals either next Friday or Saturday.
Sincere caught two passes for 43 yards and a touchdown, while Torrance Williams rushed for 99 yards and a touchdown on five carries for Sam Houston State.
Brian Bell rushed for 63 yards and a touchdown on four carries for Sam Houston State, and threw for 73 yards and another score.
DeNarius McGhee was 21 of 36 for 272 yards and a TD and Elvis Akpla caught six passes for 100 yards for Montana State (10-3).
GRAMBLING STATE 16, ALABAMA A&M 15
In Birmingham, Ala., Jacarde Carter returned a fumble 66 yards for a touchdown early in the fourth quarter to give Grambling State a win over Alabama A&M in the Southwestern Athletic Conference championship.