01 - Arrange chicken breasts in a single layer in a 6-quart slow cooker. Sprinkle ranch seasoning evenly over the chicken and top with cream cheese cubes.
02 - Pour chicken broth around the chicken. Cover and cook on LOW for 4 hours or HIGH for 2 hours, until chicken is tender and easily shredded.
03 - Remove chicken from slow cooker and shred using two forks. Return shredded chicken to the slow cooker. Stir in sour cream, cooked bacon reserving some for topping, and 1.5 cups cheddar cheese until well combined.
04 - While chicken finishes cooking, bring a large pot of salted water to boil. Cook pasta for 1-2 minutes less than package directions. Drain well.
05 - Add cooked pasta and frozen peas if using to the slow cooker. Stir thoroughly to coat all ingredients with sauce mixture.
06 - Sprinkle remaining cheddar cheese and reserved bacon on top. Cover and heat for 10 minutes until cheese is fully melted. Garnish with sliced green onions before serving.