Step 1: Season the chicken breasts with the chicken rub, salt, and pepper to taste. Step 2: Add the chicken to the slow cooker. Step 3: Cook on high for 4 hours or low for 8 hours. When the chicken has finished cooking, remove it from the slow-cooker and shred. Set aside. (Optional cheat: have your already made chicken cut up and put into crockpot with the rest of the ingredients). Step 4: Combine 1 cup shredded cheddar cheese, cream cheese, and hot sauce in a medium-sized bowl, and stir until fully combined. Step 5: Add the chicken mixture to the crockpot. Sprinkle the remaining 1 cup of shredded cheese throughout. Just heat up until all the items are melted and warmed. Step6: Optional garnish with green onions.