You can call CBOE and tell them you want that series or a particular contract.
And this has nothing to do with FLEX. Tell them there is demand for it, if they ask who you are, DONT SAY YOU ARE A RETAIL INVESTOR, the contracts will be in the option chain the next day.
I have done this plenty of times. The CBOE does not care and are only limited by OCC and the SEC, but the CBOE will trade and list anything if you can think of it, and convince them that "some people want to trade it" or that "it has benefits for hedging"
I've gotten 50 cent strike prices on stocks under $5 , I've gotten additional LEAPS and far dated options traded, I've gotten entire large chains created.
I also have been with prop shops before, so I could technically say I was a professional trader. But since you are using IB and are paying for data feeds, you can easily spin that too.