Chop the cooked lobster meat into coarse pieces, squeezing out excess juice to keep the filling from becoming soggy.
In a mixing bowl, combine the chopped lobster with mayonnaise, lemon juice, chopped herbs, and a pinch of salt and pepper. Mix gently until well coated, being careful not to break the lobster apart too much.
Slice the brioche buns in half and toast them until golden and slightly crispy, either in a toaster or skillet with a little butter for extra flavor.
Spread a thin layer of butter on the toasted buns and place them back on the skillet for about 30 seconds to enhance the buttery crunch.
Using a spoon or fork, generously scoop the lobster mixture into each toasted bun, pressing gently to fill the bun completely and create a messy, overflowing look.
Serve the lobster rolls immediately while the buns are warm and crispy, with the juicy lobster oozing out with each messy bite—enjoy the tactile crunch and tender filling.