Why did my casserole taste weird?

Casserole is usually baked in the oven and has some sort of pasta in it... what you made is more like a chicken stew..if you can try to remove the remaining drumsticks and de-bone them... bones are never good in stews or even casseroles...then add a bit of salt to taste with some parsley flakes and some minced garlic or garlic powder. you might then want to drain off the excess broth cook up some rice and pour your crock pot stew over the rice.... good luck trevor i hope this helps improve the taste of your dinner.