Brian Steinberg Senior TV EditorCarla Hall, a longtime Food Network contributor who has also logged stints on ABC’s “The Chew” and Bravo’s “Top Chef,” has struck a new talent pact with the Discovery-owned media property.Hall’s new deal means she will work exclusively with Food Network across its linear and digital outlets, and will take part in “Halloween Baking Championship,” “Holiday Baking Championship,” “Worst Cooks in America,” and Food Network’s Kitchen app.