Cook the bacon until crispy; chop or crumble. Set aside.
Bring 2 cups of water to a boil in a small saucepan. Add green beans and boil for 3 minutes, until tender-crisp. Drain and rinse with cold water.
Chop the bell pepper and red onion.
In a medium mixing bowl, combine German Potato Salad, green beans, bacon, bell pepper, and red onion.
Add olive oil, salt, and pepper (optional). Stir to combine.
Transfer to a serving bowl; garnish with fresh parsley as desired.