I guess it all depends on what your contribution margin (CM) is… If you volume is high enough already, and your running 16% labor, and your total fixed is running about 10%, then sell a food product that is 46% isn’t gonna hurt you. but if your running 32% labor, and your fixed is 20% then I can’t see doing it, unless you think it will bring them in droves.
Try it as a Dine-in Special only!!! Pizza, Ribs &( Frys Bread?) $24.99, Then they have to buy drinks, 2 pops or beers should add another $3.00 to $6.00 onto the ticket, plus your overall food cost will go down cause your serving in dinnerware, and not packaging it.
My favorite special is the 2 for 1 Dine in. They buy two 16" fully loaded pizzas $20.00 dinner for four(55% FC), but then they buy 4 drinks, a order of breadsticks, and Ice Cream cones for dessert. Cha-Ching another $20.00. Total food cost 40%, CM is 38% minus 15% fixed cost profit is 23%. I could do that everyday all-day long.