Heat a small skillet over medium heat. Toast pine nuts in skillet, stirring frequently, until fragrant and beginning to brown, 3 to 5 minutes.
Blend chickpeas, reserved liquid, lemon juice, 1/4 cup olive oil, tahini, garlic, cumin, paprika, salt, and crushed peppercorns in a food processor until smooth. Stir toasted pine nuts into the puree. Drizzle olive oil over the hummus.
