In a small bowl, whisk together all dressing ingredients. Set aside.
ASSEMBLE THE SALAD:
In a medium salad bowl, sprinkle in the lettuce. Arrange the chicken, bacon, egg, avocado and tomato on top.
MAKE THE QUESADILLA:
Spray a medium skillet with nonstick spray and heat to medium. Place one piece of the flatbread in the skillet and sprinkle cheese on top. Top with the other piece of flatbread. Heat until cheese is melted and flatbread is toasted. Flip and toast the other side. Remove to a cutting board and slice into small wedges.
Drizzle the salad dressing onto the salad and garnish with quesadilla wedges.