Gather all ingredients: frozen honeydew, frozen mango, protein powder, coconut milk, chia seeds, and lime zest.

Place the liquid ingredient (coconut milk) into the blender jar first. This helps the blades move more easily.

Add the frozen honeydew, frozen mango chunks, protein powder, chia seeds, and lime zest to the blender.

Secure the lid and blend starting on a low speed, gradually increasing to high. Use the tamper (if available) to push the frozen ingredients down toward the blades.

Blend continuously until the mixture is completely smooth and creamy, ensuring no large frozen chunks remain. If the mixture is too thick, add an extra splash of coconut milk (1-2 tablespoons at a time).

Pour the finished smoothie into a tall glass immediately and serve cold. Garnish with a small slice of fresh honeydew if desired.