Preheat oven to 375°F. Line a baking sheet with parchment paper.
Cut each sweet potato in half, rub skin with oil and kosher salt, place skin-side up on prepared baking sheet, and roast for 30-60 minutes until soft and squishes easily when you squeeze the sides.
While potatoes roast, make the miso whipped goat cheese: combine goat cheese, Greek yogurt, olive oil, miso, lemon zest, lemon juice, and a pinch of salt in a food processor or medium bowl. Blend or whisk until smooth and fluffy. Taste and adjust miso if you want more umami depth.
Top potatoes with a ¼ cup portion of the miso whipped goat cheese. Garnish with chopped chives, toasted pistachios, and Gimme Seaweed K-Crisps Sea Salt. Enjoy!