Place the chicken breasts in the crock pot.
Add cream cheese, buffalo sauce, cream of chicken soup, garlic powder, onion powder, and a pinch of salt and pepper.
Cover and cook on low for 6 hours or high for 3-4 hours.
Once cooked, shred the chicken directly in the crock pot using two forks.
Stir in the cooked pasta, milk, and shredded cheese.
Mix until the cheese melts and everything is well combined.
Top with chopped green onions or parsley before serving, if desired.