Add the drumsticks to the instant pot. Top with carrots, onions, garlic, pepper corns, sprigs of parsley and dill, Herbs de Provence and cinnamon sticks.
Pour water to fill below the 2/3 mark. Between the 1/2 and 2/3 lines.
Use the Soup/Broth setting on the Instant Pot for 30 minutes.
Release pressure, discard the whole onion, sprigs of parsley/dill, garlic, pepper corns.
Remove the chicken drumsticks, de bone and add back into to the pot.
Add the optional broken vermicelli and zucchini. Select high sauté setting and cook, uncovered, until tender. Stir in minced parsley and dill; season with salt and pepper, to taste.