1. Heat oil in a large pot over medium heat.

2. Add the chicken and cook until lightly browned, about 5 minutes.

3. Add the onion and sauté until softened, about 3 minutes.

4. Add the tomatoes, salt, pepper, and herbs. Cook for another 5 minutes.

5. Pour in enough water to cover the ingredients. Bring to a boil then reduce heat to low.

6. Simmer until the chicken is cooked through and the vegetables are tender, about 15 minutes.

7. Serve warm.