In a large pot over high heat, add the potatoes and cover with water by 1-inch. Bring to a boil over medium heat, then add a pinch of salt, reduce the heat and simmer until slightly tender, but not easily poked by a fork, about 10 minutes. Drain the potatoes and pour put them onto a baking sheet to cool completely.
In a large pan add the olive oil and heat over medium-high heat. When the oil begins to swirl, add the potatoes, season with salt and leave alone to allow a crust to form, about 5 minutes. Once a crust forms on the bottom give the potatoes a toss or flip them with a spatula and allow them to crisp on the other side, about 2 to 3 minutes more. Remove the potatoes to a serving bowl with a slotted spoon. Serve drizzled with Roasted Red Pepper Sauce.
Preheat the oven to 400 degrees F.
Put the bell peppers, onion, garlic, and peppercorns on a baking sheet. Drizzle with olive oil and season with a healthy pinch of salt. Mix with your hands to fully coat the vegetables, and arrange the bell peppers, skin side up, so that the garlic and peppercorns can hide under the cavity of the bell pepper halves. Roast until the skin of the peppers begins to blacken and pucker, about 25 to 30 minutes. Remove from the oven and immediately put all of the ingredients and residue from the baking sheet into a bowl, and quickly cover tightly with plastic wrap. Let the peppers steam for about 5 minutes. Remove the pepper halves and, using your fingers, remove their skin by gently ripping and pulling it off, and return the peeled peppers to the bowl.
Add the mixture to a blender along with the chili sauce. Pulse lightly until almost smooth, but still having a slight texture. Season, to taste, with salt and pour it into a small bowl.