Shrimp Chowder

Name: Shrimp Chowder
Ingredients: 2 slices bacon, chopped; 1 tablespoon extra-virgin olive oil, plus more for drizzling; 1 onion, chopped; 1 teaspoon tomato paste; 3 tablespoons all-purpose flour; 3 cups low-sodium chicken broth; 2 cups half-and-half; 1 pound small red-skinned potatoes, halved or quartered if large; Kosher salt and freshly ground pepper; 12 ounces medium shrimp, peeled, deveined and tails removed; 1/2 cup loosely packed basil, torn into pieces