Preheat the oven to 450 degrees F. In a bowl, combine the rice, spinach black beans, mangos, chipotle peppers, cumin, cilantro, and a large pinch of salt. On a baking sheet, rub the tortillas with olive oil. Lay 4 tortillas flat and then layer evenly with rice and beans mix plus cheese. Add the top tortilla. Transfer to the oven and cook for 5-8 minutes, then flip and cook another 5 minutes more, or until the cheese has melted and the tortillas are crisp. Meanwhile, make the salsa. Stir together the green chiles, lime juice, pepitas, and cilantro. Season to taste with salt.Serve the quesadillas topped with salsa and drizzled with yogurt. EAT!