Step 1Wash the chickens; pat dry. Combine the olive oil, 2 teaspoons of the salt and the lemon juice. Place the chickens in a roasting pan. Rub the oil mixture into the chickens, inside and out. Roast at 375 degrees for 1 hour.
Step 2Melt the butter in a medium saucepan. Add the tomatoes, the remaining 1 teaspoon of salt, the pepper and the oregano. Cook over medium-low heat, stirring occasionally, for about 5 minutes.
Step 3Pour the sauce over the chicken and reduce the oven to 350 degrees. Roast, basting frequently, until the chicken is tender, about 1 hour.