In mixing bowl, add vinegar, mustard, shallot, lemon zest, salt, pepper, dill, and chives. Slowly whisk in olive oil. Then whisk in yogurt and refrigerate.
Preheat oven to 375°. Place cubed bread on sheet pan and toast until golden brown, flipping bread half way through to toast evenly (about 8-10 minutes). In a large pot, bring water, seasoned with salt, to a boil. Add Asparagus and cook until tender (about 4-5 minutes). Remove asparagus and plunge into ice water to stop asparagus from cooking. Slice asparagus in thirds.
In a serving bowl arrange frisee, add croutons, salmon, field greens, asparagus, and eggs. Drizzle salad with yogurt dressing and sprinkle with remaining chives.