Yes they are, but you're pretty close to harvest, right? Let ride and observe them. If one opens , harvest. If it makes you feel better, gently pluck off the ones you can see with tweezers
my biggest plant got a couple about 2 weeks ago, i have 7 others and just plucked them off, some grew back but im so close to harvest now that i didnt even bother removing them anymore, I doubt any seeds will form in such a short time frame