Slow-Cooker Balsamic Chicken

First time I've tried a new recipe since school started (I've been doing lots of repeats) and it's delicious! And super easy, of course. The recipe came from The Skinny Crock Pot.

3-4 chicken breasts
2 cans diced tomatoes
1 onion thinly sliced (not chopped)
4 garlic cloves
1/2 cup balsamic vinegar
2 tbsp olive oil
1 tsp each: dried oregano, basil, and rosemary
1/2 tsp thyme
ground black pepper and salt to taste

Pour the olive oil on bottom of crock pot add chicken, plus salt and pepper. Put sliced onion on top of chicken, then put in all the dried herbs and garlic cloves. Pour in vinegar and top with tomatoes.

Cook on Low 8 hours (or high 4 hours) and serve over angel hair pasta.