In a bowl or small glass jar, combine all the vinaigrette ingredients. Taste test, and adjust to your preferences. Leave aside until needed.
In a salad bowl, remove the stems from the kale. Add 1 tbsp of the dressing and massage the kale until it is soft and tender.
Prep all your other ingredients and store them separately until assembly.
Just before serving, assemble the salad mix, chicken and egg (if using). Add 2 tbsp of dressing and toss the salad. Add more dressing if needed.
Garnish with croutons.