When I've had a garden, I've grown peppers, tomatoes, and squash (zucchini and yellow).

I didn't use pesticides. I'm not so much anti-pesticide as blessed to not have lots of pests. The previous owners of our house had been huge gardeners and apparently brought in manure twice a year. They'd lived in the house for 17 years and so that dirt was black and could be and was extremely fertile. Rhubarb and horseradish came up year after year, as did strawberries.

My favorite thing is to let the peppers stay on long enough to turn red or yellow. Green ones always seem to be relatively inexpensive in the grocery stores, so I let as many as I can turn sweet and multi-colored, and then slice and flash freeze them to use all year, supplementing with store-bought fresh green peppers as necessary. A single red pepper is $2 here right now, so having a year's supply for fajitas and such was wonderful.