Portillo will start in Friday's game against the Ducks, Zach Dooley of the Kings' official site reports.
Portillo was recalled from AHL Ontario last Sunday, and the 24-year-old will make the first start of his career after dressing as the backup goaltender in the Kings' last few games since being called up. Portillo has a 4-2-0 record with Ontario this season, posting a 2.68 GAA and a .906 save percentage.