Preheat the over to 425 degrees. In a large skillet, 13 inches, add the olive oil over medium heat. Add the shallots and cook for 3 minutes. Add the garlic, thyme and bay and cook for 2 minutes more. Sprinkle the saffron over the mixture. Add the rice and stir for 2 minutes until all the rice is coated with oil. Add the wine, salt and chicken stock, making sure the rice is evenly distributed in the pan. Adjust the heat to high and bring to a simmer. One simmering, remove the skillet from the heat and sprinkle with the tomatoes. Transfer the entire dish to the oven and cook for 20 minutes.