Greek Pasta Salad with Yogurt

I have loved this recipe.  I had something similar at a bridal shower and decided to come up with my own version that fits my taste preferences. The plain yogurt is so light  versus your typical mayonnaise pasta salad.  

1 lb butterfly or shell pasta cooked AL DENTE, then drain water

1-2 cups cooked chicken, cubed

1 small English cucumber, diced

1 large yellow, orange, or red bell pepper diced

3 oz sliced black or kalamata olives

feta cheese crumbles (optional)

1 c. plain yogurt (full fat preferred)

zest and juice from 1-2 large lemons

1/4 c. light olive oil

1/4 tsp black pepper

1 tsp salt

1 1/2 tsp dried dill

1/4 c. chopped fresh Italian parsley (optional)

--Combine all ingredients and stir until mixed well.