Combine mayonnaise, green onions, lemon juice, Slap Yo Mamma, and Old Bay in a skillet.
Roast the Anaheim and jalapeño pepper. Coat in olive oil and char on the grill. Place the charred peppers in a plastic bag. Remove and dispose of the skin, stem, and seeds. Dice into small pieces.
Mix the peppers into the skillet along with the cream cheese, shredded cheese, queso fresco, and artichokes.
Add the crab to the mixture then fold to combine without breaking up the crab.
Top with the Parmesan cheese.
Preheat a closed grill to 400 degrees F (205 degrees C).
Add the skillet with the crab dip and cook until the cheese is melted and golden brown, about 12 minutes. Let cool for 5 to 10 minutes before serving.