Heat the oven to 350 degrees F.
Slice the rolls into 1/4-inch pieces on the diagonal. Put them onto a baking sheet and bake them, turning once, until they are golden brown on both sides, about 10 minutes.
In a bowl combine the shrimp, tomatoes, basil pesto, and salt and pepper, to taste. Put a tablespoon of the mixture onto each piece of bread and serve.