Ham & swiss on pretzel roll sandwiches

Pretzel bun (enriched wheat flour [wheat flour, malted barley flour, niacin, iron, thiamin mononitrate, riboflavin, folic acid], water, sugar, palm oil, butter (milk), contains 2% or less of each of: salt, yeast, cultured wheat flour, vinegar, dried whey [whey (milk), benzoyl peroxide (decolorant)], wheat gluten, dough conditioners [sodium stearoyl lactylate, monoglycerides, ascorbic acid, enzymes], calcium sulfate, wheat starch, whole wheat flour, sodium hydroxide), ham and water (32% of weight is added ingredients, cured with water, dextrose, salt, corn syrup, potassium lactate, modified potato starch, sodium phosphates, sodium erythorbate, sodium nitrite, sodium diacetate), swiss cheese (pasteurized part-skim milk, salt, enzymes, cheese cultures), romaine lettuce, dijon mustard ( water, vinegar, mustard seed, salt, white wine, fruit pectin, citric acid, tartaric acid, sugar, spice).