Slow Cooker Chicken Dinner

INGREDIENTS
3 to 4 chicken breast
1 lb to 1.5 lbs potatoes
10 to 12 oz broccoli
.6 oz (17 g) package ranch salad seasoning mix
1 stick butter
Large lemon
salt
black pepper
* 6-quart Crockpot
* Cook on high for 3 1/2 to 4 hours