Get ready to prepare your delicious Barbecue Chicken Tostadas with these easy steps:

1. Preheat your Oven: Heat the oven to 400°F (200°C) for crisping the tortillas.
2. Prepare Chicken: In a medium-sized bowl, mix the shredded cooked chicken with the barbecue sauce until well coated.
3. Bake Tortillas: Place the corn tortillas on a baking sheet. Bake them in the preheated oven for about 5–7 minutes or until they are crispy.
4. Assemble Tostadas: Once the tortillas are crisp, take them out of the oven and layer each with a generous portion of the barbecue chicken mixture.
5. Add Toppings: Top the chicken with shredded lettuce, diced tomatoes, and cheese.
6. Drizzle Sauce: Add a dollop of sour cream or Greek yogurt on top.
7. Garnish: Finish with avocado slices and green onions for added flavor.
8. Serve: Serve immediately with lime wedges on the side for a little zest.

Following these steps will ensure you create perfect Barbecue Chicken Tostadas that your friends and family will rave about.