Bite-Size Chipotle Chicken Soft Tacos (

INGREDIENTS

• 1 pound plum tomatoes (about 4; see Cooks' notes)
• 2 tablespoons canola oil
• 2 large garlic cloves; 1 whole, 1 finely chopped
• 1/2 teaspoon dried oregano
• 1 1/4 to 1 1/2 pounds chicken breasts with skin and bones
• 1/4 cup crumbled cotija or mild goat cheese
• 1 Turkish bay leaf
• 5 cups water
• 24 small sprigs cilantro
• 1 to 1 1/2 tablespoons finely chopped chipotle in adobo, including some sauce
• 1 large white onion, finely chopped and divided
• Salt
• 24 (5- to 6-inch) soft corn tortillas