Place the carrots, parsnips, celery, onion and dill in a bowl and mash together until they are well mixed and in fine pieces, or, place these ingredients in a food processor and process until finely minced, then remove them to a bowl. Add the egg and optional chicken and mix thoroughly. Add about 1/2 cup matzo meal, using enough, and more if necessary, to form a “dough” firm enough to shape into patties. Shape the mixture into 4-6 patties. Coat the patties with more matzo meal (you can substitute panko) and set aside for about 15 minutes to let the patties air dry. Heat a small amount of vegetable oil in a sauté pan over medium heat. Fry the patties for 2-3 minutes per side or until golden brown. Drain on paper towels and serve.