Tennessee = 1
Louisiana = 2
South Carolina = 1
Alabama = 2
Mississippi = 1
Georgia = 5
These could all go away and Republicans *could* pick up another dozen seats in the House. Right now, Republicans lead 13-10 in redistricting and that's if you count Virginia's 4 seats which is currently suspended. Strip out those 4 and Republicans have a 7 seat edge and could gain another 12. This would make it very difficult for Democrats to win the House.
The GOP will work extra hard to make sure we don't keep the House so they can go back to doing nothing except going on the cocktail circuit and speechifying about how terrible it what the demoncraps are doing.