Toss the mâche in 1 tablespoon lemon juice and olive oil. Divide between two serving plates.
Gently toss the avocado with the strawberries, mint, and lemon zest. Arrange over the mâche.
Sprinkle the hemp seeds over the top, if desired, and garnish with mint and additional lemon juice to taste. Season with salt and freshly ground black pepper to taste.