Add the chopped kale to a large salad bowl. Drizzle with the olive oil and lemon juice, then using your hands, massage the kale for 1–2 minutes until softened. Let rest for about 10 minutes.
If making toasted panko: melt the butter in a small skillet over medium heat. Add the panko breadcrumbs and cook, stirring often, until golden brown and crisp, about 3–5 minutes. Remove from the heat and let cool slightly.
Add the Caesar dressing to the kale and toss until evenly coated.
Top with the Parmesan cheese, freshly cracked black pepper, and toasted panko breadcrumbs. Toss lightly or serve with the toppings sprinkled over the salad.
Serve immediately, or refrigerate until ready to serve.