To make dressing: Combine olive oil, lemon juice, serrano pepper and shallot in a food processor and blend until smooth. Season to taste with salt and pepper.
Slice the honeydew and cantaloupe and watermelon in half, remove the seeds and then scoop out with a melon baller.
Slice avocados in half and scoop out with a melon baller or cut into cubes.
Assemble the melon and avocado onto skewers. Drizzle dressing over skewers and serve.
4 servings
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.