Green potatoes with eyes aren’t exactly a nutritional powerhouse, either. In general, it’s best to steer clear of funny-looking potatoes, especially if they’ve started turning green.

LOPSIDED RED PEPPERS. Bent potatoes. Scratched eggplants. To Liselle Pires, it’s all delicious. A few years ago, when Ms. Pires moved to Seattle to take a job with Microsoft, she looked for a ...