Preheat oven to 200°C/180°C fan-forced.
Line a baking tray with baking paper and pat potatoes dry with paper towel.
Pierce all over with a fork and place potatoes on prepared tray. Drizzle with 1 tbsp olive oil, salt and pepper.
Roast for 1 hr and 15 mins or until golden and tender. Rest potatoes for 5 to 10 mins or until cool enough to handle.
Meanwhile, heat remaining olive oil in a frying pan over medium-high heat and add chopped bacon. Cook, stirring, for 5 mins or until browned. Drain on paper towel. Cool for 10 mins.
Using a small knife, cut a cross on the top of each potato. Gently squeeze the base of each potato to open top. Place on plates. Combine sour cream, half the chives and bacon in a bowl. Divide mixture among potatoes. Top with cheese, remaining chives and bacon. Season with pepper and serve.
Servings 12