Preheat oven to 425°F. Place potatoes on a sheet tray lined with parchment paper.
Roast potatoes for 25 minutes and let cool completely. Peel with a potato peeler and place potatoes into a large bowl.
Grate potatoes into bowl and mix with panko, onion powder, garlic powder, paprika, salt, and tapioca starch.
Melt unsalted butter in a saucepan until browned. Add to the potato mixture. Add eggs and work into a cohesive mixture.
Spread mixture onto a plastic wrap-lined sheet pan evenly and freeze for 1-2 hours.
Remove from freezer and cut into 18 equal pieces. Heat vegetable oil in a skillet over medium heat.
Cook for 2-3 minutes on each side until golden brown. Top with sea salt, sour cream, and chives.