In a small bowl, mix together the light mayo and Miracle Whip until smooth. Set aside.
In a medium bowl, mix ground chicken with garlic powder, black pepper, and salt.
Press a thin layer of seasoned chicken onto the back of each flour tortilla, making sure it covers the surface evenly. Then sprinkle on the breadcrumbs for added crunch.
Heat a large skillet over medium-high heat with a little avocado oil. Place the tortilla chicken-side down and cook for 3-4 minutes until the chicken is golden and fully cooked.
Flip and crisp up the tortilla side for another 2-3 minutes.
Spread a generous amount of McChicken sauce over the crispy chicken, top with shredded lettuce.
Fold it up like a taco and serve.
