Spray bottom of 9x13" baking pan with non-stick cooking spray.
Pound chicken breasts until they about about 1/4" thick (you want them to all be the same thickness so that they finish cooking at the same time).
Place chicken in a single layer in the baking pan and season with salt and pepper (sometimes I also season the chicken with a little bit of onion powder and garlic powder as well).
In a medium bowl, mix together the cream cheese, half of the shredded cheddar cheese, half of the bacon crumbles, and the dry Ranch dressing mix.
Spread the cream cheese mixture evenly over all the chicken breasts in the pan.
Top the chicken with the remaining shredded cheddar cheese.
Cook in oven for 20-25 minutes or until chicken is fully cooked (internal temperature of 165℉).
Remove chicken from oven and top with remaining bacon crumbles and green onion.
Notes
Try and make sure the chicken breasts are about the same thickness so they finish baking at the same time. You can also add onion powder or garlic powder before baking to this dish.