Chicken in a Pot with Lemon Orzo

Name: Chicken in a Pot with Lemon Orzo
Cook time: 1 h 45 min
Total time: 1 h 45 min
Cuisine: European, Italian, Mediterranean
Ingredients: 1 whole chicken (approx. 3½ pounds); 3 fat cloves of garlic; 2 medium carrots (approx. 10 ounces) 2 medium leeks (approx. 5 cups sliced, white parts only); 1 tablespoon olive oil; 2 lemons; 2 teaspoons dried tarragon (or dried thyme); 2 teaspoons flaky sea salt or kosher salt (or 1 teaspoon fine sea salt); .5 teaspoon crushed red pepper flakes; 6 cups cold water; 1.5 cups orzo pasta; .3333 cup finely chopped Italian parsley, plus more to serve; Freshly grated Parmesan, to serve