Heat 1 tablespoon of the olive oil in a skillet over medium heat. Add in the shredded chicken, garlic and oregano, and saute for 1 minute.
In a separate large skillet, heat the remaining olive oil. Place two tortillas into the skillet.
Top each tortilla with ¼ cup of the mozzarella cheese, some of the chicken mixture, the spinach, feta, tomato and then the remaining mozzarella cheese.
Place another tortilla on the top of each quesadilla. Saute for 4-5 minutes per side until browned and crispy.
Disclaimer:
Any nutritional data I provide is an approximation and actual dietary information can vary based on ingredients and proportion sizes.