tl;dr – I don’t want bread
Stop with all the sandwiches for breakfast. Not everything has to be in sandwich form; you’re not leaving some moral culinary duty unfilled if you don’t serve sandwiches all the time. If you really must have sandwiches on the menu, the very least you can do is offer normal platter items, or an a la carte option so I don’t have to feel like such a dick in public when I have to say out loud “CAN YOU PLEASE HOLD THE BREAD? I’M NOT GLUTEN SENSITIVE I’M JUST ONE OF THOSE JERKS WHO’S INTO LETTING EVERYONE HERE KNOW THAT I DON’T WANT A GRAIN RIGHT NOW K?” Poor Chinese orphans have mobile phones with the power to make a random person fart on the other side of the world, but you can’t put one breakfast item on your menu that doesn’t have dry, tasteless sponge-slabs on it? Save sandwiches for lunch, like a true American establishment in the post-Quest For Food™ years—especially you, that one independent deli near work that has no excuse for not taking my special snowflake requests. I’m about to tie my colon into some Boy Scout knot so that whenever I eat your bleached enriched inflammatory white flour slices of conveyor belt gluten that you have forced upon me, you’ll have to deal with the projectile linguine-blast of regrettable disgust that comes out of me.
PS – Vegans and vegetarians constitute 0.000000000120001% of your customer base. They don’t need specific menu items. Make them feel like the special snowflakes, not me.