Homemade Garlic Croutons:
Preheat the oven to 325 degrees F. Using a pastry brush, lightly brush both sides of the bread with oil. Cut the garlic in half and rub it on to both sides of the bread. Sprinkle with salt. Cut the bread into cubes and spread onto a baking sheet. Bake until bread is crispy and golden brown, stirring once or twice, about 10 minutes.
Lemon Pepper Grilled Shrimp:
Preheat a grill pan over a medium-high flame, or prepare a grill. Toss shrimp with the olive oil, sprinkle with salt and pepper, toss again and grill until cooked through, 2 to 3 minutes per side. Transfer the shrimp to a plate and drizzle with the lemon juice.
In a large bowl, toss the dressing with the lettuce until well coated. Add the croutons and toss to combine. Divide the salad onto 4 plates and top each plate with 5 or 6 shrimp.