In a bowl, combine the chicken mince, salt, black pepper, and Worcestershire sauce.
Mix until the seasonings are evenly distributed throughout the chicken.
In a medium bowl, whisk together the Greek yogurt, mayonnaise, grated Parmesan, garlic powder, Dijon mustard, Worcestershire sauce, lemon juice, salt, and pepper.
Mix until smooth and creamy. Taste and adjust seasoning if needed. Set aside.
Chop the romaine lettuce and place it in a large bowl. Add 1–2 tablespoons of the prepared Caesar dressing and toss lightly to coat the lettuce.
Reserve the remaining dressing for serving.
Lay the mini tortillas flat on a work surface. Divide the chicken mixture evenly among the tortillas and spread a thin layer across each tortilla.
Lightly beat the egg in a small bowl. Brush the egg over the chicken layer, then sprinkle panko breadcrumbs evenly on top so the chicken is fully coated.
Heat a large pan over medium heat and add a little oil.
Place the tortillas chicken-side down into the pan. Cook for about 4–5 minutes until the chicken is fully cooked and the panko coating becomes golden and crispy.
Flip the tortillas and cook for another 1–2 minutes until the tortillas are lightly toasted.
Cook in batches if needed.
Top each taco with a generous amount of the Caesar salad. Drizzle extra Caesar dressing over the top and finish with additional grated Parmesan cheese.
Serve immediately while the chicken is crispy and warm.