01 - Preheat oven to 350°F. Arrange tostada shells on a baking sheet and warm for 5 minutes until crisp.
02 - In a medium saucepan over medium heat, combine shredded chicken, BBQ sauce, honey (or brown sugar), and smoked paprika. Cook, stirring occasionally, until the chicken is heated through and thoroughly coated, about 5 minutes.
03 - Arrange the warmed tostada shells on serving plates. Evenly divide the BBQ chicken mixture over each shell.
04 - Layer each tostada with shredded lettuce, chopped tomatoes, red onion slices, shredded cheese, avocado slices, and fresh cilantro.
05 - Drizzle sour cream over each tostada. Add optional jalapeño slices and lime wedges if desired.
06 - Serve immediately and enjoy while the shells are still crisp.