01 - Arrange the chicken breasts in the bottom of a 6-quart slow cooker.
02 - Scatter the halved baby potatoes and sliced onion evenly around the chicken.
03 - In a small bowl, combine olive oil, minced garlic, thyme, rosemary, paprika, salt, and pepper. Drizzle this mixture evenly over the chicken and potatoes.
04 - Pour the chicken broth into the slow cooker, taking care not to wash off the seasoning from the chicken.
05 - Cover and cook on LOW for 5 hours.
06 - After 5 hours, add the green beans on top of the potatoes and chicken. Cover and cook for another 1 hour, until the green beans are tender and the chicken is cooked through.
07 - Serve hot, garnished with fresh parsley and lemon wedges if desired.