NO, do not pinch them. They are too small to be pinched. You would do it when they have 3 times as much leaf pairs/nodes. Then you would pinch the top one third.

Your pot is enough with 2 plants.
Pinch is not much need.

Thank you! Yes I realize it's crowded now; I do plan to transfer them later when they grow bigger.

I dont know your climate, other than zone 8b. But basil loves warm weather. This means, in most places where you anticipate a frost, some time in November or earlier, and right now it is getting cooler, Then your basils won't have a chance to grow much, and get bushy. So then, it is ok just to leave them where they are and let them grow as clumps.

BUT if you are somewhere in Florida or California that there won't be a frost and it wont get much colder, then you can separate and re pot them.