Oh!
I went to the gardening calender and entered "Houston TX" and found some good stuff.
"On average, your frost-free growing season starts Feb 8 and ends Dec 20, totalling 316 days."
(Hmm - you might have almost three weeks until your first frost! That might be long enough to get some baby lettuce leaves.)
Or maybe not:
" Cole crops like broccoli, cauliflower, and cabbage can be direct seeded into your garden around October 11, but because of the heat during that time of year, it's better to start them indoors around August 22 and then transplant them into the garden around October 1. Do the same with lettuce and spinach."
Sow peas directly around October 6."
The calendar itself shows not many options for December. Radishes and turnips?
But the Garden Planting Calendar could be helpful for planning your spring crops.
If your legs are as old as mine, pick a FEW things you like, and don't get exhausted trying to grow many things you don't much like eating.