If you’re truly honest, you’d say yes.
If you weren’t honest, you’d lie and say yes.
If you were truly honest and say no, then you’re not being honest about your honesty.
If you weren’t honest and say no, then you’re being honest which is a paradox.
If you’re truly honest, you’d say yes.
If you weren’t honest, you’d lie and say yes.
If you were truly honest and say no, then you’re not being honest about your honesty.
If you weren’t honest and say no, then you’re being honest which is a paradox.
You’re assuming the answer must be binary, where “yes” means you’re honest all the time and “no” means you’re dishonest all the time. Those characters show up in riddles, but in reality, most people are somewhere on the scale in between perfectly-honest and perfectly-dishonest.
Even the question “are you an honest person?” would, to most people, mean “are you generally honest?” Either answer makes sense here.