Preheat the oven to 385 degrees F (196 degrees C).
Remove core from cabbage and make 6 2-inch cuts down from the core about ¼ of the way down. Coat the cabbage with oil.
Season cabbage with a 1 teaspoon each of the following seasonings: garlic powder, smoked paprika, paprika, Cajun seasoning, Old Bay, and chicken bouillon. Squeeze ½ lemon over cabbage and rub spices into cabbage until completely coated.
Place 3 tablespoons butter in the center of cabbage and wrap tightly using two sheets of foil. Place on a baking sheet.
Bake in the preheated oven for 1 hour.
Meanwhile, melt remaining butter and whisk in remaining 1 teaspoon each garlic powder, smoked paprika, paprika, Cajun seasoning, Old Bay, and lemon juice. Set aside.
After 1 hour, remove cabbage from the oven and spoon 1 to 2 tablespoons of butter mixture over the cabbage. Re-wrap cabbage in the same foil.
Bake for 1 additional hour. Remove from oven and allow cabbage to cool for 5 to 10 minutes. Season with salt and black pepper; serve with remaining butter mixture for dipping if desired.
