In a large bowl, combine the black-eyed peas, jicama, red onion, green
onion, red bell pepper, cilantro, salsa, green chiles, lime juice,
chili powder, cumin, cayenne if using, and salt and pepper to taste.
Toss to combine. Chill at least 4 hours for the flavors to marry.
Serve chilled as a salad or at room temperature as a bed for grilled
pork or chicken.