In a large bowl, combine the diced cucumbers, bell peppers, tomatoes, red onions, cilantro, jalapeños, and minced garlic.
Drizzle in the lime juice and olive oil, then season with salt and freshly ground black pepper. Toss gently to mix well.
Cover the bowl and refrigerate for 30 minutes to allow the flavors to meld. If using with tortilla chips, serve chilled and garnish with extra cilantro. Alternatively, serve on tacos or as a refreshing topping for your favorite dishes.