Pigeon Pea Rice: Arroz con Gandules

Name: Pigeon Pea Rice: Arroz con Gandules
Ingredients: 1 teaspoon vegetable oil; 8 strips bacon, finely chopped; 1/2 cup finely chopped onion; 1/2 cup finely chopped cilantro leaves; 2 cups long-grain white rice; 1 (10-ounce) can chopped tomatoes and green chiles; 1 teaspoon dried oregano; 1 teaspoon ground cumin; 1 teaspoon kosher salt; Pinch achiote powder, optional; 1 (15-ounce) can green pigeon peas (gandules), rinsed and drained; 2 tablespoons tomato paste; 4 cups water; Chopped fresh cilantro leaves, for garnish