This is a crowd favorite. I brought it to a family reunion once and my cousins told their brother to try it. (He hates chicken and won't eat it). He ate his weight in this dip and then they let him know there was chicken in it. He didn't believe them. I had to tell him, they were telling the truth.
Cook chicken the desired way. I boil mine the night before and put it in the fridge) Shred chicken when ready to prepare.
In a large pot, place shredded chicken and hot sauce (Whole bottle or less depending on heat wanting to achieve) and mix well. Warm over medium heat. Add cream cheese and ranch dressing. Cook until well blended. Add 1/2 the bag of colby jack cheese and cook until cheese melted.
Transfer to a slow cooker (or large casserole dish). Add the remaining cheese. Cook on low in slow cooker until hot and bubbly (about 1 hour) or in oven at 350 degrees for 25 minutes.
Note-I use my slow cooker to save my oven for other party dishes.