You are operating in spec but near the maximum output current of 35A for your Kaos Spectrum, and at the very minimum of the resistance at 0.1 ohm. I don't know if that is safe or not since I don't know the reliability of that mod and what if any conservatism they have in the specs (hopefully some). I never get that close to the maximum of any mod, I vape at low power.
Your batteries are ok at that level though.
Carambrda is right about that 33 amps being output to the coil, not from the battery.
Power= I(squared) x R, thus I=SQRT(Power/R) = SQRT(100W/0.1ohm) = 31.6 Amps which is close to your display reading, thus confirming that this is the output current to your coil.
For battery current, we have to know if the batteries are in series (most mods are, but not all are). In the case of the Siegeli Kaos Spectrum the batteries are in series. The specs for your device state an input voltage range of 6.4 to 8.4V, that's 3.2V to 4.2V for each battery, with the batteries in series.
To determine current draw from the series batteries, use the lowest voltage of 6.4V, and typically an efficiency factor of 0.85 to 0.9 is alo assumed. I have started using 0.85 lately since a gentleman here on VU was using that and I found at least one mod at that efficiency (note: efficiency typically decreases below that at lower power levels).
And the power formula applied on the battery (input) side is as follows:
Power (setting value) = I x V / efficiency factor, thus I = Power / V / efficiency factor.
I = 100W / 6.4V / 0.85 = 18.3 Amps.
So you are well below your HG LB 18650 batteries continuous rating of 30A.
References:
Kaos Spectrum specs,
http://www.sigelei.com/product/index.html?id=19
Disclaimer
I am not a vaping expert, but I do play an electrical/controls engineer on TV.