Mix together scallops, lime juice, and lemon zest and juice in a bowl. Chill, stirring often, until scallops turn opaque, about 20 minutes.
Segment and chop 1 orange and juice the other. Add segments, juice, and remaining ingredients to scallops and stir gently to combine. Serve with tortilla chips.
Note: Nutritional analysis is per 3/4-cup serving.