Whisk together mayonnaise, honey, apple cider vinegar, garlic powder, and ¾ teaspoon of the salt in a medium bowl until well combined. Cover dressing, and refrigerate until ready to use.
In a separate medium bowl, stir together black-eyed peas, cayenne pepper, smoked paprika, and remaining ½ teaspoon salt.
Place lettuce in bottom of a 6-quart trifle dish in an even layer.
Top with red onion slices, starting at edge of dish and working toward center.
Top with Cheddar cheese, bacon, eggs, black-eyed pea mixture, and tomatoes.
Spoon dressing over tomatoes in an even layer. Sprinkle evenly with Parmesan cheese. Garnish with sliced scallions. Serve immediately.
