Firehouse Subs
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Small Grilled Chicken Breast sub: chicken, provolone, lettuce, tomato, onion, mayo, spicy mustard
Ask for a SMALL. The website and app usually show only the Medium, which has about twice the carbs. Skip honey mustard, sweet mustard, BBQ sauce, jerk mustard and the datil pepper hot sauce, which all contain sugar. The pickle spear on the side adds 1g carbs.
28g
Total carbs
3g
Sugar
−4g
vs usual
Instead of a Medium Grilled Chicken Breast sub (7g sugar)
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I ordered it
What's in it
Chicken - Small, standard build
28g carbs
Verified against Firehouse Subs's nutrition info on 2026-10-11. Drinks are made by hand, so amounts vary. Not medical advice.