Preheat the oven to 350 degrees F (175 degrees C).
Heat olive oil in a skillet over medium heat. Saute chicken in the hot oil with garlic powder until no longer pink in the center and juices run clear, 5 to 8 minutes.
Spread cream cheese onto the bottom of an oven-proof round pie dish. Add cooked chicken and blue cheese crumbles.
Mix blue cheese salad dressing and Buffalo sauce together in a bowl; pour evenly over cream cheese and chicken. Top with smoked Cheddar cheese.
Bake in the preheated oven until heated through and cheese is melted, about 25 minutes. Remove from the oven and let rest for 2 to 3 minutes; stir to mix ingredients.