The current premier said he had the "utmost respect" for the former Liberal premier.
“... I could never get upset with the former premier, because she’s walked a mile in my shoes,” Ford said.
Del Duca will take over from Kathleen Wynne, who stepped down in 2018.
It was painted by Linda Kooluris-Dobbs, who also painted David Peterson.
Women made up nearly half of Canada's provincial and territorial leaders in 2013.
"I think it’s time for renewal as opposed to somebody of my age coming in."
But two key issues have been tabled until next year.
Premier Doug Ford says Wynne underestimated Ontario's deficit by billions.
Premier Doug Ford's government will unveil its first big economic update since taking office in June.
Far from progressive public policy, it has been tax cuts and austerity that has prevailed in Ontario over the last decade.