Preheat your oven to 400°F (200°C) and prepare a baking sheet.
Place the whole wheat tortilla on the baking sheet and bake for 2-3 minutes per side until it becomes slightly crisp.
In a small mixing bowl, combine the shredded cooked chicken breast with the BBQ sauce until every piece is well coated.
In a separate bowl, whisk together the Greek yogurt, garlic powder, dried dill, sea salt, and black pepper to create a clean-label ranch sauce.
Spread half of the ranch mixture evenly over the toasted tortilla as your base.
Layer the BBQ-coated chicken and thinly sliced red onions over the ranch base, then sprinkle with the shredded mozzarella cheese.
Bake for 7-9 minutes, or until the cheese is melted and the edges of the tortilla are golden brown.
Remove from the oven, drizzle with the remaining ranch sauce, and garnish with fresh chopped cilantro before slicing.