This is basically the same idea as bruschetta, but with protein- and mineral-rich chickpeas as the star instead of tomatoes. This would be perfect served as an appetizer, maybe along with bruschetta and toasts topped with olive tapenade, or as a snack.
To make proper toasts for crostini, start with a baguette (you can sometimes find whole wheat ones) and slice it. Brush with olive oil, and put in the oven to toast (400F for 5-10 minutes) or you could toast in a hot pan (medium-high for 3-5 minutes per side).