In a large mixing bowl, combine the diced pineapple, chopped jalapeño, red onion, and cilantro.
Squeeze the lime juice over the mixture and add the garlic powder, salt, and black pepper.
Gently toss all the ingredients together until well combined.
Taste and adjust seasoning if necessary, adding more lime juice or salt as desired.
Cover the bowl with plastic wrap and refrigerate for at least 30 minutes to allow the flavors to meld.
Serve chilled with tortilla chips or as a topping for grilled meats or fish.