Here's the episode from the Roman Britain era:
The Supersizers Eat... Ancient Rome
Thx.
Don Brothwell and Patricia Brothwell co-authored Food in Antiquity: A Survey of the Diet of Early Peoples, gotta love that surname.
https://www.thriftbooks.com/w/food-in-antiquity-a-survey-of-the-diet-of-early-peoples_patricia-brothwell_don-brothwell/1463594/