Athenian Chicken Quesadillas

Bahan-bahan (4 porsi)

• 1.5 pounds  boneless, skinless chicken breast tenderloins
• Juice of 1 lemon
• 3/4  cup Greek dressing
• 10 ounces  bacon, chopped
• 12 ounces feta cheese, crumbled
• 6 ounces  shredded mozzarella cheese
• 10 ounces frozen spinach, thawed and drained well
• 1/4 cup chopped fresh dill, plus more to top
• Kosher salt and black pepper, to taste
• 10 -12 flour tortillas
• Nonstick oil spray
• Tzatziki, to serve (optional)