The Canaries, knocked out of the Capital One Cup by Aston Villa here in midweek, made it five successive home league victories to continue their remarkable run of 10 Premier League matches unbeaten.
Anthony Pilkington set the home side on their way with a well-taken effort after 15 minutes, only for Wigan substitute Shaun Maloney to level at the start of the second half.
However, Hoolahan, who has agreed an extension to stay at the Norfolk club until 2015, arrived on queue after 64 minutes to head past Ali Al Habsi.
"Fortunately for us Wes has signed a new deal and he has earned it and not just for this season," said Hughton.
"He was excellent and to see Wes get a headed goal was worth the entrance fee alone.
"Wes capped off a really good all-round team performance."
Norwich should have put the game beyond the visitors, who were again hampered by injuries, but were thwarted by a string of fine saves from the Latics stopper.
Hughton added: "We should really have been more than the one up at half-time and when they scored, then there was a concern.
"We made a bit of hard work for ourselves but I thought over the 90 minutes we thoroughly deserved it."
- Sports & Recreation
- Anthony Pilkington
- Shaun Maloney
- Premier League
- Aston Villa