Preheat the oven to 350 degrees. Coat a 9x13-inch baking dish with olive oil cooking spray.
Simmer the heavy cream, Boursin cheese, shallot, clove, sea salt, and freshly cracked black pepper in a medium saucepan over medium heat, stirring occasionally, until the cheese melts, about 5-7 minutes.
Using a mandolin slicer, slice the peeled potatoes ¼-inch thin.
Layer half of the potato slices in overlapping rows in the prepared baking dish. Season with sea salt and freshly cracked black pepper to taste.
Drizzle half of the cream mixture evenly over the potatoes. Sprinkle the top with some of the chives.
Layer the remaining potato slices in overlapping rows. Season with sea salt and freshly cracked black pepper to taste.
Drizzle the remaining cream mixture evenly over the potatoes. Sprinkle the top with more chives.
Cover with foil and bake for 45 minutes.
Remove the foil and bake for 25-30 minutes, or until the potatoes are tender and the top is browning and bubbling.
Remove from the oven and cool for 10 minutes.
Top with more chives, if desired, and serve. Enjoy.