Put the potatoes in a pot with water to cover and one teaspoon salt and simmer until tender, 10-15 minutes. Drain and run under cold water, then transfer to a mixing bowl.
While potatoes are cooking, cook the bacon in a skillet over medium-high heat until crisp, 6-8 minutes. Drain on paper towels, saving the drippings.
Mix the reserved drippings, oil, vinegar and mustard with a pinch each of salt and pepper. Drizzle over potatoes and toss. Add bacon and parsley and toss again. Realize that you DO like potato salad after all.