Grilled Pesto Chicken Sandwiches

Bahan-bahan (4 porsi)

• 1 1/2 tablespoons balsamic vinegar
• 1 teaspoon dried thyme
• 1 teaspoon dried oregano
• 1 tablespoon Dijon mustard
• 2 teaspoons garlic powder
• 1/4 cup extra virgin olive oil
• Kosher salt & ground pepper, to taste
• 4 boneless, skinless chicken breasts
• 1 loaf fresh Italian bread
• 6 oz fresh mozzarella cheese, sliced thick
• 1 cup pesto
• 1 tomato, sliced
• 1 12 oz jar roasted red peppers, drained and cut into pieces