Slice the zucchinis into thin strips using a mandolin or vegetable peeler, aiming for about 1/8-inch thick slices. Lay the strips on a paper towel to absorb excess moisture.
- In a bowl, mix the snow crab meat with mayonnaise, Dijon mustard, lemon juice, dill (or parsley), garlic powder, salt, and pepper. Stir until combined, leaving the mixture chunky.
- Heat olive oil in a grill pan or skillet over medium-high heat. Grill or sauté the zucchini strips for 1-2 minutes per side, until softened but still firm. Remove from heat and let cool.
- Place a spoonful of the crab mixture at one end of a zucchini strip and gently roll it up. Repeat with the remaining zucchini strips and crab mixture.
- For the dipping sauce (optional), whisk together olive oil, lemon juice, Dijon mustard, salt, and pepper in a small bowl.
- Arrange the zucchini rolls on a platter, drizzle with the dipping sauce if desired, and garnish with fresh dill or parsley. Serve with lemon wedges on the side.