Prepare the potatoes
Peel the potatoes and grate them using the large holes of a box grater.
Rinse the potatoes
Place the grated potatoes in a bowl of cold water. Swish well, drain, and repeat until the water looks mostly clear.
Drain well
Transfer the potatoes to a sieve or clean kitchen towel. Press out as much water as possible. Dry potatoes brown better.
Cook the pancetta
Add diced pancetta to a 9-inch skillet over medium heat. Cook for 3 to 4 minutes, until the fat starts to render and the pancetta smells savory. If needed, add a small drizzle of oil.
Add the potatoes
Add the drained potatoes to the skillet. Spread them evenly, then cook over medium heat for 15 to 18 minutes, stirring often, until tender. If the potatoes start sticking or browning too fast, add 1 tablespoon of water.
Add the cheese
Stir in half of the grated cheese. Cook for about 1 minute, until it begins to melt into the potatoes.
Add remaining cheese and herbs
Add the rest of the cheese and the chopped herbs. Stir until the mixture looks creamy, cheesy, and evenly combined.
Form the frika
Press the mixture into an even layer in the pan. Cook for about 5 minutes, until the bottom turns golden and crisp.
Flip and finish
Slide the frika onto a plate, then carefully flip it back into the skillet. Cook for another 5 minutes, until the second side is browned.
Serve warm
Transfer to a cutting board or plate. Slice into wedges and sprinkle with extra herbs if desired.