Preheat oven to 350°F. Brush a 10 inch cast iron skillet or similar size baking dish with oil. Set aside. (If using a baking dish, you may spritz with cooking spray.)
In a medium-size mixing bowl using an electric mixer, whip together cream cheese, sour cream, mayonnaise, Ranch seasoning and a few dashes of hot sauce. Whip until fully combined and smooth.
To the bowl add, 1 ½ cup cheese, chicken, bacon, chilies and chives. Mix by hand until ingredients are evenly distributed. Reserve a small amount of bacon and chives for garnishing.
Spread evenly in baking dish and sprinkle with remaining 1 cup cheese. Bake for 35-40 minutes until bubbly around the edges and the cheese is lightly golden.
Garnish with reserved bacon and chives. Serve warm with crostini, pita chips, tortilla chips or vegetables for dipping.