Grilled Chicken Breast - Small
Firehouse Subs · United States
Updated September 23, 2026

Oils & additives
Explore the ingredients PRūF tracks. Possible alternatives are labeled. The ingredient statement is below.
Nutrition
| Nutrient | Amount |
|---|---|
| Calories | 363 |
| Total fat | 17.41 g |
| Saturated fat | 4.23 g |
| Trans fat | 0.06 g |
| Cholesterol | 51.53 mg |
| Sodium | 894.44 mg |
| Carbohydrate | 27.75 g |
| Fiber | <1 g |
| Total sugars | 3.3 g |
| Added sugars | 1.22 g |
| Protein | 23.34 g |
Serving size: 134.58 g
Allergens
Explore menu allergens in the PRūF iPhone app.
See menu & allergens in the iPhone appIngredients
Medium White Sub Roll : ENRICHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), MALTED BARLEY FLOUR, WATER, SUGAR, YEAST, SOYBEAN OIL, SALT, WHEAT GLUTEN, DOUGH CONDITIONER (ASCORBIC ACID, ENZYMES), CALCIUM PROPIONATE (PRESERVATIVE), VINEGAR, MOLD INHIBITOR (CULTURED WHEAT FLOUR, FERMENTED LACTIC ACID), L-CYSTEINE., Provolone Cheese : PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, NATURAL SMOKE FLAVOR., Oven Roasted Chicken : CHICKEN BREAST WITH RIB MEAT, WATER, LESS THAN 2% OF RICE STARCH, SEA SALT, DEXTROSE, SODIUM PHOSPHATES, YEAST EXTRACT, ENCAPSULATED CITRIC ACID (CITRIC ACID, HYDROGENATED VEGETABLE OIL [SOYBEAN, PALM, COCONUT, COTTONSEED]), DEHYDRATED GARLIC, NATURAL FLAVORS, SUNFLOWER OIL. (CANADA ONLY: CHICKEN BREAST, WATER, CANOLA OIL, SUGARS (DEXTROSE, CORN MALTODEXTRIN), SALT, NATURAL FLAVOUR, SODIUM PHOSPHATE, CHICKEN BROTH. MAY CONTAIN WHEAT, EGG.)., Iceberg Lettuce : ICEBERG LETTUCE, Onion : ONION, Tomato : TOMATO, Mayonnaise : SOYBEAN OIL, WATER, CORN SYRUP, EGG YOLKS, DISTILLED AND CIDER VINEGAR, SALT, MUSTARD SEED AND CALCIUM DISODIUM EDTA TO PROTECT FLAVOR., Spicy Mustard : VINEGAR, MUSTARD SEED, SALT, AND SPICES.
Sources
Firehouse Subs nutrition & ingredient sourceUpdated September 23, 2026. Recipes and availability may vary by location.
Menu category: Build Your Own Sub