Process garlic cloves in a food processor until finely chopped. Add black-eyed peas, 6 Tbsp. olive oil, tahini, lemon juice, 1 tsp. paprika, salt, and pepper. Process until smooth. Spoon into a bowl; top with 2 Tbsp. olive oil and 1/4 tsp. paprika. Serve with pita chips. Top with lemon zest, if desired.