Wash and slice the golden potatoes into quarters.
Add the potatoes to a large stockpot and cover with cold water and 2 tablespoons of kosher salt.
Bring the water to a boil. Reduce the heat to a medium, cover, and simmer.
Cook the potatoes for 20-25 minutes until fork-tender.
Drain the potatoes, and spread the hot potatoes onto a baking sheet fitted with a rack (optional with paper towels) and cool completely.
Meanwhile, cut 4-5 slices of thick-cut bacon into half-inch pieces.
Heat a cast-iron skillet to medium/high heat and add 3 tablespoons olive oil to the skillet along with the cut bacon.
Cook the bacon in the oil, occasionally stirring, until the bacon is cooked (but not overly crispy) and the bacon pieces have infused the olive oil with flavor.
Use a slotted spoon or spatula to remove the bacon from the skillet and set it aside for later.
Once the potatoes are cooled, cut them into approximately 1" pieces, removing the skins if desired (not shown).
Add the potatoes to the skillet with the bacon-infused oil, and cook the potatoes over medium/high heat, stirring only occasionally, until the potatoes are crisp and golden (approximately 20-25 minutes).
Season with potatoes with additional salt and pepper to taste and add the cooked bacon back into the skillet. Stir well.
To finish, add 1½ tablespoons champagne vinegar to the skillet and stir well to combine.
Top the potatoes with chopped scallions, and serve hot.