Preheat the oven to 375°F.

Cut the potatoes into ¾-inch thick rounds and arrange them evenly on a large baking sheet.

Lightly brush both sides of each potato slice with oil using a pastry brush. Season with salt and pepper.

Bake the potatoes in the preheated oven for 25 minutes at 375°F.

Meanwhile, cook bacon in a frying pan over low heat, turning occasionally until fully cooked and crispy. Once done, set the bacon aside to cool, then crumble it; reserve the bacon drippings for later use.

Take the potato slices out of the oven and brush all sides with the reserved bacon drippings.

Return the potatoes to the oven and bake for an additional 10 minutes.

Once done, top the potatoes with grated cheese and crumbled bacon. Place them back in the oven until the cheese melts, approximately 5 minutes.

Remove the potato slices from the oven, sprinkle with Italian seasoning and green onions.

Serve immediately, accompanied by sour cream.