How to Make It
Preheat grill or grill pan to high (450°F to 500°F) and lightly oil grates. Grill corn, uncovered, turning occasionally, until corn begins to char, 10 to 12 minutes. Remove from grill and let cool slightly. Cut kernels from cobs and discard cobs; transfer kernels to a medium bowl. Add poblano, shallot, 5 tablespoons oil, lime juice, cumin, 1½ teaspoons salt, and ½ teaspoon pepper; stir to combine.
Thread 3 scallops onto 2 6-inch side-by-side bamboo skewers so scallops lie flat. Repeat with 6 skewers and remaining scallops (using 8 skewers total). Pat scallops dry with paper towels. Drizzle with remaining 2 tablespoons oil and season with remaining 1 teaspoon salt and ½ teaspoon pepper. Grill scallops, uncovered, until grill marks appear, about 4 minutes. Using a fish spatula, flip and cook until scallops are just cooked through, about 3 minutes more.
Toss salad greens with corn mixture and avocado. Top with grilled scallops.