Roast Chicken with Fennel and Olives

Ingredients:

1-5 lb roast chicken
3 tablespoons butter, softened
1 teaspoon fennel fronds
1 lemon + 1 teaspoon lemon zest
2 large potatoes cut into wedges
½ cup Spanish olives
Fennel bulb, sliced thin
1 onion
3 garlic cloves

Directions: