Preheat the broiler. Split the whole pack of attached dinner rolls in half horizontally. Place the top and bottom halves cut-side up on a baking sheet. Broil until toasted, 1 to 3 minutes. Remove from the oven and preheat to 400 degrees F.
Melt the butter with the hot sauce in a small saucepan over medium-high heat, whisking, until smooth. Toss the chicken with all but 1 tablespoon of the spicy butter in a medium bowl.
Spread the chicken mixture evenly on the bottom bread piece; dot evenly with the cheeses and sprinkle with the celery. Cover with the top bread piece, then brush the roll tops with the reserved 1 tablespoon spicy butter and sprinkle with the celery seeds. Bake until the bread is toasted and the cheese is melted, 12 to 15 minutes.
Photograph by Levi Brown