Add white rice, cayenne pepper, cumin, chili powder, and paprika to a rice cooker or saucepan. Add chicken stock and water and cook stir until the spices are distributed. Cook the rice in the rice cooker or stovetop until rice is tender.
While the rice is cooking, heat up olive oil in a skillet. Add diced onion and bell pepper. Sauté until the peppers are tender. Add garlic and diced tomato and continue to sauté until the tomato is breaking up and incorporating with the vegetables.
When the rice is cooked, add to the tomato and vegetable mixture and stir. Add salt and pepper to taste and sprinkle with fresh cilantro.