Preheat oven to 400 degrees.
Wash the skin of the potatoes and dry with a towel. Line a baking sheet with aluminum foil and drizzle olive oil on the potatoes and some kosher salt. Bake for about 1 hour or until you can easily pierce the potato with a fork.
In the meantime, place bacon on another aluminum foil lined baking sheet and cook for about 5 minutes on each side.
While potatoes are baking, combine pesto, sour cream, mayonnaise and parmesan cheese in a mixing bowl. Set aside.
When the potatoes are done, cut them in half lengthwise. Using a regular spoon, scoop out about half of the inside (set aside for another use), place back on the baking sheet and drizzle with more olive oil and salt. Put your oven on broil and bake for another 5 minutes or utnil the edges start to brown.
Take the potatoes out and fill them with the respective toppings: