To be honest, I haven't tried this exact recipe with regular flour as I created it while on the Keto Diet. However, just going based off of experience alone, regular flour and almond flour are certainly not interchangeable and each have their own roles in cooking and baking. If you do give it a go, let me know your results in the comments down below. I'd imagine you'd get a way denser cookie that is not light and airy but again, I can't say for sure.