8 ounces whole-wheat linguine or spaghetti
2 large lemons, plus lemon wedges for garnish
1 medium leek (white and pale green parts only), thinly sliced and rinsed well
1 tablespoon extra-virgin olive oil
½ cup chopped flat-leaf parsley, divided
2 green garlic, minced
¼ teaspoon salt
Pepper
Red pepper flakes
¾ cup finely grated Parmesan cheese, divided
¼ cup snipped fresh chives, divided