Homemade Poppy Seed Chicken (Crockpot!)

chicken breasts (boneless, skinless)

dried thyme (or 2 sprigs fresh)

dried sage (or 4 leaves fresh sage)

onion (quartered)

butter

flour

chicken broth (low sodium) (divided)

poppy seeds

sour cream

salt and pepper (to taste)

sleeve Ritz crackers (crushed)

butter (melted)

Fresh chopped parsley and chives (optional)