Add in the cumin, coriander, chili powder, sriracha if using, fire roasted tomatoes, hatch chilies, milk, chicken broth, and salt and pepper to taste, stir to combine. Bring to a simmer and stir in the pasta. Bring to a boil; cover with lid, reduce the heat to medium low and simmer until the pasta is cooked through, about 13-15 minutes. Mine took exactly 15 minutes. Add in the cilantro, parsley, and 1 cup of cheese, stir to combine. Remove from heat, add the cheese to on top, cover with lid and let sit for 3-5 minutes until cheese melts. Serve warm garnished with scallions and additional cilantro, if desired.