In a medium bowl, whisk together the flour, sugar, salt and baking soda. In a small bowl, combine the egg, egg yolk, 1/2 cup sour cream and half of the lemon peel; stir into the dry ingredients (the batter will be slightly lumpy). In a small bowl, combine the remaining 1/2 cup sour cream and remaining lemon peel.
Heat a nonstick griddle over medium-high heat; lightly oil. Working in batches, add a tablespoonful of batter for each blini and cook until the bottoms are golden, about 2 minutes. Flip and cook through, about 1 minute more.
Top each blini with some lemon sour cream, salmon roe and chives.
