Cut avocados lengthwise into halves; remove seeds and skin.
Cut each half crosswise into 4 pieces.
Sprinkle avocados with enough lemon juice or pineapple juice to coat.
Cut pineapple slices into halves.
Line four salad plates with greens.
Spoon cottage cheese over greens to make "beds" for avocados.
Reassemble one avocado half over each serving of cottage cheese, alternating avocado pieces with pineapple halves.
Serve with Pineapple-Honey Dressing.