Preheat the broiler to high.
In a food processor, combine the zest of the orange, parsley, garlic, scallions and pulse until chopped. Add the swordfish chunks and pulse again until ground.
Season with a little salt and black pepper then transfer everything to a bowl. Score the mixture into 4 equal portions and make 4 patties. Preheat a large skillet over medium-high heat with EVOO. Once you see a ripple in the oil, add the patties and cook on each side for 5-6 minutes.
While the burgers are cooking, rinse out the food processor and add in the roasted red peppers. Grind into a paste and reserve. Toast the buns until slightly charred.