So far I have heard of three free food specials:
1) Good through November 1
Godfather's Pizza, any medium 1 topping pizza for $6.99
Kids 10 and under, free 1 topping mini pizza wyb a drink at regular menu price (dine-in only, limit 2 per coupon)
2) October 31 6pm - Midnight
Taco Bell is giving away a free Blackjack Taco, no purchase necessary
3) October 31
Papa Murphy's is giving all kids a free mini-pizza to take home if they wear their Halloween costume into the store.