Chicken, Squash, and Leek Soup

Ingredients

• 2 tablespoons extra virgin olive oil
• 1 medium onions, chopped
• 2 pounds bone-in chicken thighs
• 2 teaspoons dried thyme
• 2 teaspoons dried rosemary
• 2 cloves garlic, crushed
• 2 teaspoons sea salt
• 6 cups water
• 1 medium leeks, chopped
• 3 cups peeled and chopped butternut squash
• 1 bunch lacinato kale, thinly sliced (about 4 cups)