How to Make It
Combine bread cubes and 1 cup water in a bowl or shallow dish. Let stand until bread has completely absorbed water, about 2 minutes.
Process almonds and garlic in a blender on low speed until coarsely chopped. Add bread cubes, remaining 1 cup water, grapes, 1 cup cucumber, vinegar, 1 tablespoon oil, and salt to almond mixture. Process until smooth. Pour mixture into a bowl; chill until cold, about 1 hour.
Return bread mixture to blender, and process to redistribute any solids that have settled, about 15 seconds.
Ladle about 2/3 cup soup into each of 8 bowls. Divide lobster evenly among bowls. Drizzle evenly with remaining 1 tablespoon oil; top with remaining 1/4 cup cucumber and chives. Garnish with Aleppo pepper, if desired. Serve cold.