This is the way.

I do this every night with 2 pills. I just did it 3 minutes ago, in fact.

Lay cat in lap. Grab head and kinda hold/lightly pinch cheeks with left hand. With right hand force your fingers pinching the pill into the back of the throat. Push it as far back as quickly as you can with your pointer finger. Hold him to make sure it gets swallowed.

Apologize and give him a little scratch and kiss.