Heat oven to 450°F. Line 15x10x1-inch pan with foil. Spray both sides of each tortilla lightly with cooking spray. Place 2 tortillas on foil-lined pan. Sprinkle each with half of the chicken, bell pepper strips, cheese and green onion. Top with remaining 2 tortillas.
Bake 3 to 5 minutes or until light brown and crisp. Cut into wedges; serve with salsa.