Summer's Best Avocado Toast

Name: Summer's Best Avocado Toast
Cuisine: American
Ingredients: 6 slices whole grain bread, toasted; 1 Hass avocado, halved, seeded, peeled, and cut into 6 wedges; 2 medium ripe tomatoes, thinly sliced; 1½ cups thinly sliced cucumber; 1 to 2 cups baby romaine lettuce or spinach; ½ to ⅔ cup fresh alfalfa sprouts (optional); Sea salt and freshly ground black pepper, to taste; 2 tablespoons lemon juice