01 - Preheat oven to 425°F. Line a large baking sheet with parchment paper or lightly grease with cooking spray.
02 - Place potato slices in a large bowl. Drizzle with olive oil and sprinkle with kosher salt and black pepper. Toss thoroughly until evenly coated.
03 - Arrange seasoned potato slices in a single layer on the prepared baking sheet, ensuring pieces do not overlap. Bake for 25 to 30 minutes, flipping halfway through cooking, until golden brown and crispy.
04 - Transfer baked potato slices to an oven-safe platter or keep on the baking sheet. Distribute shredded cheddar cheese and crumbled bacon evenly over the potatoes.
05 - Return to the oven and bake for an additional 5 to 7 minutes, until cheese is completely melted and bubbly.
06 - Remove from oven. Add dollops of sour cream across the top, then sprinkle with green onions, diced tomatoes, pickled jalapeños, and fresh parsley. Serve immediately while hot.