Cut the chicken into bite-sized pieces.
Chop the onion and garlic.
Dice the tomatoes.
Heat olive oil in a pot and brown the chicken.
Add the onion and garlic and sauté until translucent.
Add the tomatoes and potatoes and cook together.
Pour in water and tomato sauce and bring to a boil.
Add bay leaf, salt, and pepper, and simmer over medium-low heat for 20 minutes.
Serve the finished stew in a bowl.