Preheat your oven to 400 degrees. Line two baking sheets with parchment paper .
Place the sweet potatoes on the lined baking sheet. Add the chopped bacon and 1 tablespoon of the rosemary on top of the sweet potatoes. Sprinkle with sea salt and pepper.
Roast the sweet potatoes for 20 minutes. Using a spatula, flip the sweet potatoes to roast the opposite side. Rotate the trays in the oven (top to bottom, vice-versa) and roast for 10-15 minutes, or until the sweet potatoes begin to brown and the bacon is crispy. Remove the trays from the oven, toss with the remaining rosemary and enjoy!