Ranked by protein per calorie.
- Bacon (per slice) — 25 cal, 2g protein
- Hard-Boiled Egg — 80 cal, 6g protein
- Small American Cheese (per slice) — 45 cal, 3g protein
- Large American Cheese (per slice) — 90 cal, 5g protein
- Avocado — 90 cal, 1g protein
- Jalapeños (whole or sliced – about 5-8 slices) — 0 cal, 0g protein
- Grilled Peppers and Onions — 25 cal, 0g protein