In a medium pot, add the farro and enough water to cover by 2 inches. Bring to a boil over high heat, then reduce the heat to medium to maintain a rapid simmer for about 25 minutes or until the farro is cooked. Drain and set aside to cool off.
Meanwhile, in a large bowl, add the feta, oil, yogurt, lemon, pickle juice, mustard, salt, and pepper. Whisk until combined.
To the bowl, add the farro, cucumber, kale, dill, walnuts, and pickles. Toss to coat.
Serve topped with more feta, nuts, black pepper, and a generous drizzle of good olive oil.