Bring a large pot of salted water to a boil. Add the penne pasta and cook according to package instructions until al dente (about 9-11 minutes). Drain and set aside.
Heat olive oil in a large skillet over medium-high heat. Add the diced chicken breast and cook until no longer pink, about 5-7 minutes. Remove chicken and set aside.
In the same skillet, add chopped onion and cook until translucent, about 3-4 minutes. Add minced garlic and sauté for 1 minute until fragrant.
Stir in diced tomatoes with green chilies and chipotle in adobo sauce. Add cumin, paprika, salt, and pepper. Let simmer for 5 minutes to develop flavors.
Return cooked chicken to skillet. Add cooked penne pasta and chicken broth. Mix well to combine evenly.
Remove skillet from heat. Stir in sour cream until smooth and creamy. Add 1 ½ cups shredded cheese and mix gently.
Preheat oven to 350°F (175°C). Transfer mixture to baking dish and sprinkle remaining ½ cup cheese on top. Bake uncovered for 20-25 minutes until cheese is melted and bubbly with a golden crust.
Sprinkle fresh chopped cilantro over the top. Serve hot and enjoy.