To light the peppers I used a SB800 Camera right high though white umbrella full power. To light the background and turn it green I used a green gel on a Metz 48 at 1/2 power aimed at a black backdrop. Black backdrops seem to work better at reflecting the gel color. I sat the peppers on a sheet of black Plexiglas. Black plexi seems to work much better than glass on a black cloth. See the following photo for the setup shot.
Thanks for highlighting your trials and errors. Looks good!