There are a few ways that you can get chicken breast in Elder Scrolls Online. One way is to kill chickens and loot their carcasses. Chickens can be found in a variety of locations throughout the game world, so keep your eyes peeled when you're exploring.
Another way to get chicken breast is to purchase it from a vendor. Meat vendors can be found in most major cities, and they usually sell chicken breast for a reasonable price.
If you're a proficient cook, you can also try your hand at cooking chicken breast yourself. Chicken breast can be cooked using a variety of methods, so experiment and see what you can come up with.
Whatever method you choose, make sure you get your hands on some chicken breast and enjoy the deliciousness that it has to offer!