This will make 15 appetizers if you separate each biscuit into 3 sections. So you'll need to use two 12-count muffin tins or cook three of them in a second batch.
Spray muffin tins with non-stick spray. Preheat oven to 350 degrees F.
Separate biscuits into 3 thinner rounds. Don't cut them, you will pull them apart, this is why getting the biscuits with layers is important.
Press the biscuits into the bottom of the muffin pan and up the sides slightly. This will be the crust.
In a large skillet, mix the chicken, cream cheese, 1 cup cheese, Ranch dressing mix, and bacon.
Spoon about 2 tablespoons chicken mixture over the biscuit crust and top with reserved Colby cheddar cheese.
Bake at 350 for 12 to 14 minutes or until biscuits are done and cheese is melted.
Remove from pan and sprinkle with green onions. Serve warm or room temperature.
Notes
For the chicken, you can boil, bake, grill, or use rotisserie.