Step 1

Preheat the oven to 400 degrees F.

Step 2

Prick the potatoes all over with a fork, then place them directly on the middle oven rack and bake until soft when squeezed lightly and the skin is crisp, about 1 hour. Remove and let cool to handle, 15 minutes. (Leave the oven on.)

Step 3

Meanwhile, heat a large, dry skillet over medium-high heat. Lay the chicken skin flat on a work surface and sprinkle with salt and pepper on both sides. Place the skin flesh-side down in the skillet and fry like bacon, placing a heatproof plate or bowl on top for even cooking and extra crispness, until golden brown, about 5 minutes per side. Remove to paper towels reserving the chicken fat (schmaltz). Break the skin into pieces when cool enough to handle.

Step 4

Slice the potatoes in half. Scoop out the middles (save for another use such as pancakes, soup or mashed potatoes). Lay cut-side up on a baking sheet. Brush with the schmaltz and sprinkle with more salt and pepper. Bake until lightly brown, about 10 minutes.

Step 5

Turn the oven to broil. Combine both cheeses, the olives and scallion whites in a small bowl. Divide into the scooped potatoes and broil until the cheese is bubbly, 2 to 3 minutes. Garnish with the chicken skin, scallion greens, sour cream and a dash of sriracha.