In a large bowl, stir the chickpeas, celery, onion, parsley, chiles, garlic, olive oil, and vinegar. Season, to taste, with salt. Serve immediately or let stand for 1 or 2 hours and re-season just before serving.
Slice the bread into 1/2-inch thick slices. Toast on a preheated grill or in an oven for 4 to 5 minutes. Brush 1side with olive oil. Season with salt and pepper.
Spoon some of the chickpea mixture over the bread slices and serve immediately.