The Icelandic international has played seven matches so far this season, but he is yet to register a goal.
However, Jackett insists that the 24-year-old will get on the scoresheet shortly - as he is constantly troubling defenders.
“I feel Sigurdarson has been unlucky not to score,” Jackett said.
“He is due a goal with his effort and workrate and the problems he is causing for defenders.
“He was unlucky with his strikes and chances not to score on Saturday.
“I do feel with the effort he is putting in and the trouble he is causing for defenders that the goals will come.
Sigurdarson did appear to be heading for the exit door at Molineux, and his resurgence has been an unexpected one.
The forward had previously not played for Wolves since 2013, after being sent on a series of loan moves, but since the turn of the year he has broken back into contention.
A combination of injuries and a lack of options has allowed Sigurdarson his chance, but he is currently playing for his future.
Sigurdarson’s contract at Molineux expires in the summer, and the club have made no move to extend his deal yet.
Sigurdarson’s return has not helped Wolves break out of their slump, as they have won only one of the seven games he has played for them to date.