Spiced melon salad

Ingredients

• 1 1/2 tsp chili powder
• 1 tsp lime zest
• 1/2 tsp kosher salt
• 1/4 watermelon , cut into 1/4-in.-thick slices
• 1/2 honeydew , cut into 1/4-in.-thick slices
• 1/2 cantaloupe , cut into 1/4-in.-thick slices
• 1 lime , halved
• 1/4 cup cilantro leaves