Everything on the menu that can be made without chilli says so on its page, and you choose it before it goes into the basket rather than typing it into a note somebody may not read.
No chilli means none in the dish. It does not mean a kitchen with no chilli in it, so if you are ordering for somebody who genuinely cannot have any, ring us and say so plainly and we will tell you honestly whether we can promise it that night.
Extra egg, extra patty and a larger portion are all choices on the item. The price changes on the page as you pick them, so the total you see is the total you transfer.