Pour in the chicken broth and add the chopped potatoes. Season with salt and pepper. Bring to a boil, then reduce heat and simmer until the potatoes are tender, about 15-20 minutes.
Stir in the heavy cream and chopped kale. Cook until the kale is wilted and tender, about 5 minutes.
Crumble the cooked bacon and add it to the soup. Taste and adjust seasoning as needed. If desired, add a pinch of crushed red pepper flakes for a little heat.