Cook the Chicken: Place the whole chicken, garlic, onion, salt, pepper, and optional herbs into a large pot or slow cooker. Pour in enough water or broth to fully cover the chicken.
Simmer: Cook until the chicken is fork-tender. If using a slow cooker, cook on low for about 4-6 hours.
Debone Chicken: Remove the chicken from the pot and carefully debone it. Set aside.
Cook Dumplings: Bring the broth to a gentle boil and drop in the flat dumplings. Cook until the dumplings are tender.
Return Chicken: Add the deboned chicken back to the pot and simmer for an additional 10–20 minutes.
Season: Taste the broth and adjust seasoning if needed. Serve hot.