Preheat the oven to 425 degrees. Line a sheet pan with foil and grease with cooking oil of your choice.
Rinse and cut the potatoes to ½ inch pieces. Place in a large bowl and coat with olive oil. Sprinkle with the seasonings- salt, celery salt, onion powder, garlic powder, black pepper, chipotle chili powder and stir to coat them evenly.
Spread the seasoned potatoes onto the prepared sheet pan and bake for approximately 15 minutes, or until fork tender. Remove and let cool to room temp.
Slice and cook the bacon until crisp. Drain on paper towels.
Separate hard boiled eggs, roughly chopping the whites, finely mash the yolks with a fork.
Combine all remaining ingredients (reserving a little bacon and scallions for garnish) in a large bowl. Mix well with a large spatula. Transfer to a serving bowl, let chill in the fridge until ready to serve. Garnish with remaining bacon and scallions when ready to serve.