Chickpea Stew With Bacon and Broccoli Rabe Recipe

Name: Chickpea Stew With Bacon and Broccoli Rabe Recipe
Ingredients: 4 ounces (115g) thick-cut bacon (about 4 rashers), cut crosswise into 1/4-inch strips; 1 medium red or yellow onion (8-ounce; 225g), cut into 1/4-inch dice; 4 medium cloves garlic, thinly sliced; 2 teaspoons minced fresh rosemary; 1 ounce (30g) oil-packed anchovy fillets (about 10 fillets); 5 cups cooked chickpeas (2 pounds; 1kg) plus 2 cups (475ml) chickpea cooking liquid (see note); 1 bunch (about 1 pound; 450g) broccoli rabe, stem ends trimmed and cut into 1-inch lengths; Kosher salt and freshly ground black pepper; Extra-virgin-olive oil, for drizzling; Calabrian chili paste or other chili paste, for serving (optional)