Now here is a point of discussion. When coins are being sent from one person to a specific address, there is no "sending address" unless the coins are stored in a single address completely. Since many users of this forum have received payments from different sources like some signature campaign, some giveaway, exchanges, work payments, all those are combined to pay the sum that the user asks to send. Correct me if I am wrong here.
As for turning off the use of change addresses go to Tools>Preferences>Transactions and check/uncheck the boxes in that page. If you apply these for your Ledger's wallet it should work, though I dont have specific results for hardware wallets in case they vary.
There is no such option in Ledger Nano. I checked all options in Settings for that means it will go on for each transaction and I will need to login to my account to know my real balance. Will need to use Electrum to send from a specific address and avoiding this change address feature.