Hi Chococake,
I wrote up my thesis last year and my supervisor suggested using bullet points to summarise the main findings in the introduction of each results chapter. I was actually quite against this, (I almost felt like I was telling people spoilers to each chapter! ), but I went along with it.
Neither of my examiners commented on it, and I think from an outsiders point of view it is probably a nice way to see the key findings.
So, from my experience it was completely fine, but I understand why you're questioning it as I did too!
Good luck with your writing,
Nikki