Watermelon Gazpacho

Name: Watermelon Gazpacho
Ingredients: 4 cups watermelon, cut into 2 inch chunks; 3/4 cup cucumber, peeled, seeded and cut into 1 inch chunks (about 1/2 cucumber, reserve the other half for garnish); 1.5 cups vine ripe tomatoes, quartered (about 4-5 tomatoes); 2 cups red bell pepper, seeded and sliced into 1 inch chunks (or 1 medium pepper); 2 cups yellow bell pepper, seeded and sliced into 1 inch chunks (or 1 medium pepper); 1 tbsp jalapeno, seeded and roughly chopped (about 1/2 jalapeno); 1 clove garlic; 1/4 cup fresh basil leaves; 1/3 cup fresh chives (plus more for garnish); 3 tbsp red wine vinegar; 1 tsp kosher salt, or more to taste; 1/2 tsp black pepper; 2 tbsp olive oil (for serving)