Chicken Enchiladas Suizas

Name: Chicken Enchiladas Suizas
Ingredients: 2 skin-on, bone-in chicken breasts (about 2 pounds); 2 cups low-sodium chicken broth; 2 cloves garlic; 2 bay leaves; 3 to 5 sprigs fresh cilantro, plus more for topping (optional); Kosher salt; 2 pounds plum tomatoes; 1 or 2 serrano chile peppers, stemmed; 2 tablespoons vegetable oil, plus 1/2 cup for frying; 1 large white onion; 2/3 diced, 1/3 sliced into rings; 1/2 cup Mexican crema or sour cream, plus more for topping (optional); 12 corn tortillas, preferably white; 3/4 cup crumbled queso fresco