In a food processor, combine the roasted red peppers, sun-dried tomatoes, olive oil, lemon juice, garlic, cumin, paprika, half the walnuts and a large pinch of both salt and pepper. Pulse until completely smooth and combined. Stir in the remaining walnuts. Heat a small skillet over medium heat and add the cumin seeds. cook stirring often until toasted, about 3-5 minutes. Spread the dip on a plate and drizzle with olive oil. Top with cumin seeds and salt.