Preheat your grill to a high setting. Place half the tortilla chips at the bottom of a baking dish. Top with half the salsa, half the turkey, half the jalapeños and half the spring onions. Add the remaining nachos, then the remaining salsa, turkey and jalapenos.
Sprinkle over the cheese and pop under the grill for 2-3 minutes, until the cheese is melted and lightly golden. Top with the remaining spring onions, sour cream, guacamole and coriander to serve.