After Wynn suffered his season-ending shoulder injury against Washington, he spent much of the time during Utah's games with Chow in the booth.
"The time we were together, I enjoyed it immensely," Chow said. "He is going to take our quarterbacks and be our quarterbacks coach, and I'm really excited."
Chow said he thought he could handle the responsibilities of being a head coach and coach the quarterbacks at the same time but realized it was too much and decided to hire Wynn.
"It's a lot to handle," he said.
Hawaii is 1-8 overall and is 0-6 in the MWC. Junior quarterback Sean Schroeder is 152-for-294 for 1,546 yards and nine touchdowns with 10 interceptions on the season.
Utah coach Kyle Whittingham said Wynn was emotional last week when he broke the news to him. Wynn was working with freshman Travis Wilson.
"It sounds like he has a good opportunity, and I wish him well in that," Whittingham said.
Offensive coordinator Brian Johnson was confident Wynn could succeed.
"He knows all the technique and fundamental stuff, it's just continuing to develop with everything, and he will always be a football guy," Johnson said. "There will be some growth to it with the recruiting and whole deal just like when I was 22 and just starting in this profession. There was some stuff I didn't know and still continue to learn, but you just go along and roll with it and work hard and have thick skin and figure it out."
Wynn retired from football this year after suffering a career-ending injury to his left shoulder against Utah State. It was his fourth shoulder injury and third to that shoulder.
He finished his career ranked eighth in passing yards (4,637) and with a 14-7 record as a starter.
He earned his bachelor's degree in economics in May.