https://www.simplyrecipes.com/recipes/skillet_chicken_puttanesca/
Ingredients
1 (28-ounce) can whole peeled tomatoes, with their juices
4 anchovy fillets, coarsely chopped, optional
1 cup pitted Kalamata or other black olives, coarsely chopped
1/4 cup capers
1 teaspoon crushed red pepper, or more to taste
3 tablespoons chopped fresh oregano
4 skinless, boneless chicken breasts (about 3 pounds)
1/2 teaspoon salt, or more to taste
1/4 teaspoon ground black pepper, or more to taste
3 tablespoons olive oil, divided
2 cloves garlic, finely chopped
Extra sprigs fresh oregano, for garnish
Crusty bread, to serve (skip if serving gluten free)