Arroz con Pollo is a simple one-pot Dutch oven Mexican-inspired meal, where chicken and rice are cooked together, so the rice absorbs all the wonderful flavors.
Heat oil in the Dutch oven over medium heat. Season chicken with salt and pepper. Brown chicken on both sides, for 3 to 4 minutes per side, then remove from the Dutch oven.
In the same Dutch oven, sauté onions until soft and translucent. Add rice and cook, stirring often, until toasted, being careful not to burn it, about 3 minutes. Season with cumin, garlic powder, salt, and pepper.
Add the tomato sauce and water then bring to a boil. Stir in the rice, then add the tomatoes with green chilies.
Place the chicken on top of the rice and bring to a simmer. Put the Dutch oven lid on and cook without stirring until the chicken is cooked through and the rice is tender, 30 to 45 minutes.