Congrats to “The Next Iron Chef” foodie Donatella Arpaia and her husband, cardiac surgeon Dr. Allan Stewart, who welcomed a healthy son yesterday morning at Columbia Presbyterian hospital, weighing in at 8 pounds, 3 ounces. They haven’t revealed his name, but we’re told mother and baby are doing fine. The boy’s arrival was perfectly timed — yesterday also marked Arpaia’s 40th birthday and the one-year anniversary of her namesake restaurant Donatella.