Giada's "House" Soup

Ingredients

• tablespoons extra-virgin olive oil, plus more for drizzling
• leek, white and tender green parts only, finely chopped
• carrots, 1 finely chopped, 1 sliced
• fennel bulb, finely chopped
• Kosher salt
• teaspoon red pepper flakes
• dried small white beans, such as navy
• to 3/4 cup farro
• ounce can diced tomatoes
• quarts chicken stock
• to 3 sprigs thyme
• inch piece parmesan cheese rind
• ounces turkey or Polska kielbasa, cut into half-moons
• to 5 large leaves Tuscan kale, ribs removed, chopped
• Grated parmesan cheese and fresh lemon juice, for serving