Add bacon to a frying pan over medium-high heat. Fry until crispy and remove to a paper towel covered plate. Let cool.
Add potatoes to boiling water. Cook until fork tender. Drain in colander. Transfer to bowl and let cool for 30 minutes.
Pour melted butter over potatoes and partially mash the potatoes (not fully, just break it up some). Add salt, pepper and chives and gently stir to combine. Add remaining ingredients and gently stir to combine. Cover and let continue to cool in the refrigerator for another 30 minutes (up to 2 days) before serving.