MISE EN PLACE. Gather all ingredients and clean potatoes.
SLICE. First, Slice the red onion to create different-sized onion rings that will be placed on top of the potato salad after plating. Then, chop the parsley. Lastly, slice the cleaned potatoes into 1/3 inch rounds, removing the ends.
BOIL. Fill a large pot with water and bring to a boil. Once boiling, gently add potatoes, being careful not to splash yourself, and reduce heat to a high simmer. Cook for approximately 15-20 minutes, checking with a fork for tenderness. Make sure to not over-cook the potatoes, in order to keep their skins on them. When the potatoes become just tender remove from heat and drain in a colander. Let cool a bit then dress potatoes while they are still slightly warm.
PLATE. On a large platter, start slightly overlapping the potatoes until all potatoes have been plated.
DRESS. Drizzle olive oil over potatoes, then lemon juice. Add onions, cut in rings, and parsley. Salt & pepper to taste.
SERVE.