Cut the snow peas into thirds. Grate the carrots. Dice the celery. Chop the hardboiled eggs.
Mix the olive oil, lime juice, pineapple juice, chili powder, salt and pepper in a jar. Shake well to blend. Set aside.
Scrub the potatoes and pierce with a fork. Arrange in a circle in a microwave. Cook on high 4 minutes. Turn potatoes over and microwave another 4 minutes. Remove from the microwave and wrap in a towel.
Place corn and snow peas in a microwave-safe bowl. Cover and microwave on high 2-3 minutes, or until peas turn bright green. Stir in carrots, celery, and pineapple and let cool to lukewarm. Mix with half of the prepared dressing; refrigerate.
To serve, arrange lettuce on 4 plates. Peel and slice potatoes; arrange in a circle at the outer edges of the lettuce. Place the corn mixture in the center of the lettuce. Sprinkle with chopped eggs and parsley. Drizzle all with remaining dressing.