In a food processor, combine the green olives, olive oil, balsamic vinegar, and garlic powder. Pulse until the mixture reaches your desired consistency; it shouldn't be too smooth.
Add the parsley to the olive mixture and pulse again to incorporate the flavors.
Toast the bread in an air fryer or toaster until it's golden and crisp.
Spread a generous amount of the olive tapenade over the toasted bread.
Sprinkle a pinch of salt on top for an extra burst of flavor.