Iguana-on-a-stick

Iguana-on-a-stick, available as a whole iguana or in the form of iguana bits, is an edible food item in Fallout, Fallout 2, Fallout 3 and Fallout Tactics to replenish hit points.

Fallout 3
Iguana-on-a-stick is commonly found throughout the Capital Wasteland, in containers or being peddled by vendors.
 * But yet Iguanas themselves are never actually seen in the game anywhere.