- Scoop out some of the avocado from the pitted area to widen the "bowl" area. Place the scooped avocado into a medium-size mixing bowl. Mash it with a fork.
- Add the tuna, bell pepper, jalapeno, and cilantro to the mixing bowl. Pour lime juice over. Stir it all together until everything is well mixed.
- Scoop the tuna into the avocado bowls. Season with salt and pepper.