 Fatafehi played college football at Kansas State University.Fatafehi started 24 consecutive games at defensive tackle for Kansas State University and registered 128 tackles and 12 sacks after transferring from Snow College; he posted 80 tackles and 8.5 sacks as a senior at Kansas State to earn first-team All-Big 12 Conference honors; as a junior, he picked up Big 12 Defensive Newcomer-of-the-Year honours as well as second-team all-conference accolades.Fatafehi was a first-team junior college All-American at Snow College, where he was the team's defensive captain and most valuable player as a two-year starter.