Roast the almonds in a pan without fat for about 3 minutes. Clean, wash, shake dry and cut into strips. Grate parmesan. Crush all ingredients and oil in a mortar.
Season to taste with salt and pepper. Prepare pasta in boiling salted water according to package instructions. Cut mozzarella into cubes. Drain pasta water, fold mozzarella and pesto into the pasta and arrange on plates.