Heat a grill pan or large nonstick skillet over medium-high heat. Pour extra-virgin olive oil into a small dish. Using a pastry brush, coat mushroom caps with oil. Grill 10 minutes, until tender and season with grill seasoning blend.
Meanwhile, preheat a medium skillet over medium to medium-high heat. Add remaining extra-virgin olive oil to pan -- left from brushing mushroom caps -- to skillet and combine with 2 tablespoons butter. Melt butter into oil and add bay leaf and chopped vegetables, season with salt and pepper and crab boil seasoning or, poultry seasoning and paprika. Saute until vegetables are tender, about 5 to 7 minutes. Add hot sauce to vegetables. Run your fingers through the crab to make sure there are no pieces of shell in the meat. Break up crabmeat with fingertips and mix into veggies. Butter toasted bread with remaining 1 tablespoon of diced butter. Add toast to veggies and moisten stuffing with chicken stock. Adjust seasonings. Top cooked portobello caps with stuffing. Garnish with chopped parsley and serve along side greens.
Pour lettuce into a bowl. In a smaller bowl, combine lemon curd with vinegar and mustard using a whisk. Whisk in oil in a slow stream and season dressing with salt and pepper, to your taste.