Slice the bread into roughly 1/2-inch thick slices and place them on a large baking sheet.
Brush the tops of the bread evenly with olive oil then bake in the preheated oven until lightly browned and crisp, 5 to 7 minutes.
Take the bread out if the oven and set aside.
Use a sharp knife to finely chop the olives, capers, and garlic (or use can pulse them in a food processor a few times until finely chopped) then place them in a bowl.
Stir in the 3 TBSP of olive oil, the lemon juice, and the black pepper until well combined.
Spread the olive mixture on the bread slices and serve.