The fictional Grand Theft Auto fast-food chain that parodies KFC is Cluckin’ Bell.
Cluckin’ Bell is a recurring chicken restaurant brand in the Grand Theft Auto universe. Its name combines “cluck,” the sound associated with a chicken, with “bell,” echoing the naming style and visual branding of real-world fast-food chains. The chain’s advertisements and restaurants use exaggerated slogans and imagery to satirise commercial chicken restaurants.
The brand appears across multiple games, including Grand Theft Auto: San Andreas, Grand Theft Auto IV and Grand Theft Auto V. In some titles it is an accessible restaurant where characters can buy food or restore health; in others, it is mainly represented through signs, billboards, delivery vehicles and fictional advertising.
The other choices are also GTA food brands, which makes this question easy to confuse. Burger Shot is the series’ parody of a hamburger chain, Up-n-Atom evokes American burger restaurants, and The Well Stacked Pizza is a pizza franchise. None is the chicken chain associated with KFC.