Heat oven to 425°F. Spray large cookie sheet with cooking spray or line with cooking parchment paper. In large bowl, beat egg, 2 tablespoons lemon juice, 1 tablespoon Dijon mustard, 1/4 cup reduced-fat mayonnaise, the soy sauce, Sriracha sauce and Cajun seasoning with whisk. Stir in bell pepper and green onions. Fold in crabmeat, one-fourth of the bread crumbs, the salt and pepper. Place remaining bread crumbs in shallow dish.