Preheat an oven to 450°F / 230°C. Bring a large pot of water to a rapid boil. Submerge the string beans into the boiling water. Cook for exactly 3 minutes, then transfer to a prepared ice bath. Cool for 5 minutes before draining.

Return the large pot of water to a rapid boil. Add 1 tablespoon Kosher salt and ½ teaspoon baking soda. Carefully add the potatoes, then cook for 10-12 minutes. Drain, then return the potatoes to the warm pot, seal with a lid, then hold in place with pot holders and shake vigorously for 15-20 seconds.

Drizzle 2 tablespoon olive oil on a rimmed baking sheet, then pour the potatoes on top. Use your hands or a spatula to spread into a single even layer. Cook for 40 minutes, flipping the potatoes once halfway through cook time.

While the potatoes cook, make the dressing. Combine ½ cup extra virgin olive oil, 2 tablespoon fresh lemon juice, 1 tablespoon chopped oregano, 1 tablespoon thinly sliced chives, 1 clove chopped garlic, 1 teaspoon honey, 1 teaspoon Kosher salt, and ¼ teaspoon black pepper in a mason jar. Seal tightly, then shake until well mixed.

When ready, place blanched green beans on a large platter. Top with crispy potatoes, ¼ cup thinly sliced red onion, ⅓ cup halved Kalamata olives, and ⅓ cup feta cheese. Drizzle the dressing on top, then serve immediately with additional chives, if desired.