I like RG's reply.
The spinach would be worth trying in both late-fall and early-winter (I'm using the term "winter very loosely, here
). You could also try putting up some lattice on the south side of it to give it some shade from the afternoon sun.
For the peppers, it is great to hear what folks on the forum have had luck with, but that still doesn't mean you will. Take [url=https://www.helpfulgardener.com/forum/viewtopic.php?t=31221&sid=e3c5bf9278a0a425b01dfd55be7af3ad]this thread[/url] for instance. One member has never had luck with a particular type of pepper, the other member did not in a previous location, but is now. This is why it is great to talk to folks in your are and see what they are having luck with. You can always cross-reference with posts here and maybe find a pepper that a lot of folks seem to have good experiences with.