Gather all ingredients and ensure the banana and pineapple are properly frozen for a thicker smoothie consistency.
Combine the spinach, frozen banana, Greek yogurt, almond milk, and pineapple chunks in a blender. Add a tablespoon of honey if desired. Blend until smooth, ensuring there are no spinach chunks left. If the smoothie is too thick, add a bit more almond milk to achieve the desired consistency.
Pour the smoothie into a glass and serve immediately for the best flavor and texture.