Jalapeño peppers can be obtained from Jalapeño plants. It is one of the ingredients used in making a gecko kebab and Cook-Cook's Fiend stew at a campfire. It is also the one of the ingredients used in crafting the fiery purgative. Jalapeño peppers have an exceptionally low weight despite restoring about the same amount of health as standard food items, making them exceptionally practical for healing minor injuries.
Like all other Mojave Wasteland plants, ripe Jalapeño plants found in the wasteland will eventually regrow after being picked by the player character, making them an unlimited supply of free food.