Chipotle Chicken Quesadillas - Smoky, Saucy & Cheesy

Ingredients

• 3 tablespoons olive oil
• 1 large red onion, (chopped (about 1½ cups))
• 4 cloves garlic, (minced)
• 1/3 cup minced chipotle peppers in adobo sauce ((you'll need about 6 chilis))
• 4 vine-ripened tomatoes, ((about 1¼ lbs/567 g), seeded and diced)
• 3 scallions, (thinly sliced)
• 2 tablespoons honey
• 2½ cups cooked shredded chicken ((white and/or dark meat))
• 1 teaspoon salt
• ½ cup chopped cilantro
• 6 10-inch flour tortillas
• 4 cups shredded sharp cheddar cheese
• Sour cream, (for serving (optional))
• Lime wedges, (for serving (optional))