Cook the rice according to the instructions on the package. Once tender, season with salt and pepper. Keep warm covered with a lid.
Make the Beans: Heat the oil in a saucepan over medium heat. Sauté the garlic and onion until the onions start to soften. Stir in the cumin, then stir in the black beans and water, and season with salt and pepper. Simmer for 15–20 minutes to develop flavor.
Make the Enchiladas: Heat the oil in a skillet over medium heat. Sauté the chicken, garlic powder, cumin, oregano, chili powder, and paprika to an internal temperature of 165°F (74°C)). Then whisk in the broth and tomato paste. Season with salt. Bring to a low simmer for 10 to 15 minutes so the flavors can blend and the sauce can thicken.
Finish the Rice: Fluff with a fork. Season with salt and pepper to taste.
Finish the Beans: Remove from the heat and stir in the cilantro. Season with salt and pepper to taste.
Preheat the oven broiler on low.
Mix the ginger beer and lime juice together. Add mint.
Assemble the Enchiladas: Use a slotted spoon to portion the chicken into each shell, then roll it up tightly. Spoon the sauce over top and sprinkle with cheese and Jalapeño peppers (if using). Place under the oven broiler to melt.
Serve the enchiladas with rice, beans, and Moscow mule mocktail. Serve over ice if desired.