Tomato and Cannellini Bean Soup

Name: Tomato and Cannellini Bean Soup
Ingredients: 1 cup dried cannellini or other small white beans, soaked overnight; 1 onion, quartered through root end; 4 garlic cloves, crushed; 2 bay leaves; Kosher salt; 4 tablespoons olive oil, divided, plus more for drizzling; 1 28-ounce can whole peeled tomatoes, drained; ½ teaspoon (or more) crushed red pepper flakes; 1 onion, chopped; 1 fennel bulb, cored, chopped; 4 garlic cloves, very thinly sliced; 1 tablespoon Sherry vinegar; 4 cups low-sodium vegetable broth; 1 bunch Swiss chard, stems removed, leaves torn into pieces; Chopped unsalted, roasted almonds (for serving)