1. The night before season the chicken with salt, pepper and lemon juice. The next day melt the butter in a large saucepan. Add the onion, chiles, garlic and tomatoes; fry until the onion is transparent. Add the chicken and fry; add boiling water to make it tender. Once cooked, remove from heat and reserve the meat.
2. In another saucepan cook the peas in salted water until tender.
3. Wash the rice and put in a saucepan; add the reserved chicken and the peas with the cooking liquid. Add more water to cover and simmer, covered, until the rice is cooked. The dish can be served with sauce or dry.