Spring Meatloaf with Gremolata Crumbs

Name: Spring Meatloaf with Gremolata Crumbs
Ingredients: 4 slice firm white bread; 1 lemon; 2 tbsp. margarine; 2 carrots; 1 medium onion; 1 medium zucchini; 1 tsp. salt; 1 lb. ground chicken; 2 large eggs; .13 tsp. ground black pepper; 1 clove garlic; ½ c. loosely packed fresh parsley leaves; 2 tbsp. extra-virgin olive oil