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What’s Cooking: Veteran food expert Jackie Olden is going to be back on KNX starting Jan. 23 to anchor the station’s “Food News Hour” on weekends. She’s making the move concurrent with a program format change at KGIL, which broadcasts her “Come Into the Kitchen” show. Olden, who co-anchored KNX’s food hour from 1978-86, will talk about cooking techniques and answer questions from listeners in her upcoming KNX time slot--Saturdays and Sundays from 10:06-11 a.m.