extra-virgin olive oil
yellow onion, quartered
carrots, cut into about 4" pieces
stalks celery, cut into about 4" pieces
turnip, quartered
parsnip, cut into about 4" pieces
(2 1/2- to 3-lb.) whole chicken
(48 oz.) homemade chicken broth
sprigs fresh dill
sprigs fresh flat-leaf parsley
Kosher salt
Freshly ground black pepper
large eggs
chicken fat (schmaltz), melted
seltzer water
matzo meal
Kosher salt
Freshly ground black pepper
Chopped fresh dill, for serving