I made this a while back with Enchiladas. It was great! A little spicy, so take the chili powder down a notch or two if you don't enjoy spice.
2T vegetable oil
1c uncooked white rice
1 onion, chopped
1/2 green bell pepper, chopped
1 (10 ounce) can diced tomatoes and green chiles
2t chili powder, or to taste
Heat oil in a deep skillet over medium heat. Saute rice, onion, and bell pepper until rice is browned and onions are tender.
Stir in water and tomatoes. Season with chili powder and salt. Cover, and simmer for 30 minutes, or until rice is cooked and liquid is absorbed.