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.
To assemble the burgers: Place one patty on the bottom of a bun and smear it with some of the red pepper paste. Top with some of the chopped romaine, the sliced oranges and the bun top. Serve the burgers with some fancy chips alongside.