After Nikola Vučević’s first full year in Chicago, the Bulls know they need to get the veteran center into his comfort zone this season. The Bulls struggled to attack the paint consistently last season, ranking 29th in the league with 18.2 touches in the paint per game. The lack of penetration severely limited Vučević, who often was expected to create more of his offense with long-range shooting than with more sure-fire chances around the rim. The Bulls are emphasizing a more balanced approach this season — both for Vučević and for the offense at large. “It’s less stagnant than it was last yea…