Loaded Melting Potatoes

Name: Loaded Melting Potatoes
Ingredients: 2 pounds Yukon Gold potatoes , scrubbed and sliced into 1-inch rounds; 1 tablespoon unsalted butter , melted; 1 tablespoon extra-virgin olive oil; 1 teaspoon dried parsley flakes; ½ teaspoon ground pepper , plus more for garnish; ¼ teaspoon salt; 3 slices applewood-smoked bacon; ¾ cup lower-sodium chicken broth; 5 medium cloves garlic , peeled and smashed; ¾ cup shredded sharp Cheddar cheese; ¼ cup reduced-fat sour cream; 2 small scallions , thinly sliced ( 3 tablespoons )