1. Stir together chopped artichoke hearts and next 3 ingredients; spread mixture evenly over top of 3 tortillas. Top evenly with chopped chicken, shredded mozzarella cheese, and remaining tortillas.
2. Cook quesadillas, one at a time, in a large nonstick skillet over medium-high heat, 2 to 3 minutes on each side or until lightly browned and cheese is melted. Cut into eighths, and serve immediately with salsa, if desired.