Home-made High-protein Yoghurt?

I was just wondering whether or not anyone here makes their own yoghurt.

I have been buying chobani yoghurt (plain, fat-free Greek) because it is super high in protein when compared to other yoghurt. But it is also a bit expensive. I have been seeing easiyo yoghurt making kits and also reading online about ways to make your own yoghurt. The skim easiyo yoghurt looks good but is not quite as protein-packed as chobani. I am pondering-is there a way to make my own yoghurt with similar nutritional value to chobani yoghurt? Like, has anyone tried a recipe involving skim milk powder, and substituted some of the milk powder for protein powder?

Any insight would be much-loved.