Prepare the Vinaigrette: In a small bowl, whisk together the lime juice, honey, chili powder, Tajín seasoning, olive oil, and a pinch of salt until well emulsified. Set aside.

Prep the Melon and Vegetables: Ensure the honeydew melon is chilled and diced evenly. Thinly slice the red onion and finely mince the chili pepper. Always taste the pepper first to gauge heat level.

Combine Main Ingredients: In a large mixing bowl, gently toss the honeydew cubes, sliced red onion, chopped mint leaves, and minced chili pepper.

Dress the Salad: Pour about two-thirds of the reserved chili lime vinaigrette over the melon mixture. Gently fold everything together using a rubber spatula to avoid crushing the melon.

Rest and Serve: Allow the salad to marinate for 5 minutes at room temperature to absorb the dressing flavors. If using arugula or watercress, place a bed of greens on chilled plates and spoon the salad mixture over top. Drizzle with any remaining dressing before serving immediately.