Heat olive oil in a large skillet over medium heat. Cook and stir onion in hot oil until tender, about 5 minutes; add garlic and continue to cook and stir until fragrant, about 1 minute more.Advertisement
Stir tomatoes, chicken, red bell pepper, raisins, olives, red wine vinegar, oregano, cumin, and bay leaves into the onion mixture; cook until heated through, 5 to 7 minutes more. Remove and discard bay leaves before serving.
You can put rice into the pot to cook with everything else, but add 2 cups chicken broth and simmer 20 minutes until the rice is done. One fewer pot to wash!