How to Make It
In a food processor, combine the lobster with the mayonnaise, tarragon and lemon zest and pulse to a chunky paste. Season with salt and pepper.
Using a paring knife, cut a 1 1/2-inch-round plug out of the top of each roll, leaving a 1/2-inch border all around. Using a small spoon, carefully hollow out the rolls. Spoon the lobster filling into the rolls, garnish with the chives and serve.