Oh yeah,
You would provoke an AoO from this maneuver, but not until after you attacked:
from vertical view (X=large creature, |=wall, P=character, ..=1 5'x5' space)
jump:
......P
XX..|
XX..|
attack (moved 5 feet forward off the wall)
....P..
XX..|
XX..|
provokes AoO from second 5' of...