Roasted Cod and Vegetables with Mustard Sauce

Name: Roasted Cod and Vegetables with Mustard Sauce
Ingredients: 5 tbsp. plus 1 tsp. extra-virgin olive oil (divided); 1/4 c. minced fresh chives; 2 tbsp. whole-grain mustard; 1 tbsp. honey (or maple syrup) (divided); 1 tsp. grated lemon zest (remember to zest your lemon before juicing!); 2 tsps lemon juice; 1 tsp. kosher salt, plus a pinch more, to taste (divided); 3/4 tsp. ground black pepper, plus a pinch more, to taste (divided); 1 lb. small red potatoes (unpeeled, halved); 1 lb. broccoli florets (cut into 2-in. pieces); 1/2 tsp. paprika; 4 6 oz. cod fillets 1 in. thick; olive oil cooking spray