Mix ground turkey, breadcrumbs, egg and lemon pepper, and then make into meatballs the size of nickels. Drop into a pot of boiling water for 5 minutes, drain and cool. In a clean pot, sweat onions, celery, butternut squash, garlic and lentils until vegetables are translucent. Add the stock and simmer 45 minutes until the lentils are soft. Add the meatballs and parsley, bring back to a boil, adjust seasoning and serve.