Small: $6.99 — 370 Calories
Medium: $9.99 — 740 Calories
Large: $14.49 — 1130 Calories
This sub features sliced, marinated grilled chicken breast topped with melted provolone cheese. It is served “Fully Involved,” which at Firehouse Subs includes:
- Mayonnaise & Spicy Mustard
- Lettuce, Tomato, and Onions
- A Dill Pickle Spear on the side
- Served on your choice of a toasted White or Wheat roll
View Full – Firehouse Subs Menu With Price
💰 Estimated Pricing
Prices vary by location and regional economic factors.
- Small: $6.99 – $8.49
- Medium: $9.99 – $11.99
- Large: $14.49 – $16.99
📊 Nutrition Table
Values based on a standard “Fully Involved” preparation on White bread. Using Wheat bread or removing mayo will significantly reduce calories and fat.
| Size | Calories | Total Fat (g) | Protein (g) | Carbs (g) | Sodium (mg) |
| Small (4″) | 350 – 370 | 18g | 20g | 29g | 1,220mg |
| Medium (8″) | 700 – 740 | 36g | 40g | 57g | 1,510mg |
| Large (12″) | 1,150 – 1,160 | 54g | 72g | 96g | 2,630mg |
⚠️ Allergen List
The following allergens are present in the standard Grilled Chicken Breast recipe:
- ✅ Wheat / Gluten (Roll)
- ✅ Milk / Dairy (Provolone Cheese)
- ✅ Egg (Mayonnaise)
- ✅ Mustard (Spicy Mustard)
- ✅ Soy (Often found in the bread and chicken marinade)
FAQs
Can I order this as a salad?
Yes. You can get the Firehouse Salad with Grilled Chicken, served over romaine lettuce with fresh veggies.
Is there a gluten-free option?
Yes. Most locations offer a gluten-free roll for a small extra charge. Let staff know about allergies to reduce cross-contact.
Can I change the cheese?
Yes. Provolone is standard, but you can swap it for Cheddar, Monterey Jack, or Pepper Jack.
How can I lower the calories?
Skip the mayo, remove the cheese, or choose a Sub-in-a-Tub instead of bread.
Is the spicy mustard very hot?
No. It’s a tangy deli-style mustard with a little extra zing, not strong heat.
