Squatty interior defender who felt somewhat miscast as a 0-technique nose over the center. Jackson is explosive off the snap with the ability to get into blockers quickly or to attack their edges as a penetrator. He tends to ride on blocks once they land squarely and needs to develop his hands for better counters as both a run defender and a rusher. Jackson plays with good strength, but he's more gradual than twitchy in his battles. He might be more consistently effective at a lighter weight and as a rotational nose in a one-gapping even front.