To begin, make the chickpea salad. Add the chickpeas to a mixing bowl, then using a potato masher or heavy spoon, crush the chickpeas until they're in smaller chunks. DON'T mash them into a purée - you still want some large-ish chunks of chickpea.
Add in the chopped celery, chopped scallions, chopped herbs, and raisins, and stir.
Make the dressing by combining all dressing ingredients into a bowl, and mixing well. Taste, and adjust seasonings to your preference.
Add in the dressing to the chickpea salad and stir well. Set aside while you assemble the rest of the sandwich.
To make the hot honey butter, use room-temperature butter. Or, soften butter in the microwave for about 15 seconds. You do not want to use melted butter.
Combine the softened butter, hot honey, and black pepper and stir until evenly combined.
Take out your ciabatta rolls or other firm, crusty bread and cut them in half. Spread on the hot honey butter on each piece. Then, layer on the chickpea salad on one half of each sandwich, at least until it is 1" tall. Then, using a spoon, spread out the chickpea salad.
On top of the chickpea salad, add on enough arugula to cover the salad. Drizzle over a little bit of olive oil on the arugula, and squeeze a little bit of lemon juice. Sprinkle with Maldon salt or sea salt.
Close up the sandwiches, and cover them in parchment paper or foil.
Enjoy!