Grilled Chicken and Cherry Tomatoes with Garlic Bread

Name: Grilled Chicken and Cherry Tomatoes with Garlic Bread
Ingredients: 6 tablespoons unsalted butter , cut into 12 pieces, divided; 1 tablespoon minced garlic; 2 tablespoons chopped fresh parsley , divided; 1¾ teaspoons table salt , divided; ¼ teaspoon granulated garlic; Pinch red pepper flakes; ½ large loaf soft Italian bread , halved horizontally; 1½ pounds cherry tomatoes; 4 (6- to 8-ounce) boneless, skinless chicken breasts , trimmed; 1 (8-ounce) ball burrata cheese , room temperature, quartered