Because the chairs already lay back SO much!
Delta Airlines plans on restricting how far you can recline your seat on some of their flights, but only by a couple of inches.
They are hoping for a balance for people who like to lean back a little and those who need space to work on the fold-down tray.
The airline is only doing the adjustments on their A320 planes. These aircraft are for 1 to 2-hour domestic short haul flights.
Good news though, Delta is not taking away any legroom to make these changes.