Sexton entered last Saturday's game against Virginia Tech late in the second quarter, his first collegiate game action.
The Laurinburg, N.C. native replaces junior Joe Dailey in the starting lineup, after the Nebraska transfer has thrown four interceptions in his two starts.
But Bunting said the mobile Dailey (67 rushing yards through two games) will get in the game as well.
"Joe Dailey will play," Bunting said. "Joe still has an integral role on this team. He has great vision -- like Ronald Curry."
Sexton was 9-of-21 for 124 yards against Virginia Tech, with one touchdown and two interceptions.
"Every decision I make is trying to help us have an opportunity to win," said Bunting, who made the decision to start Sexton on Tuesday morning. "We did not perform very well on first downs last week, that's not the quarterback's fault first, but we want to see if Cam can help us on first down.
"Cam is a competitor. He's is going to get better as he matures. He's a winner."