Cute little guy, and very young which is a good thing. It looks like a male to me ... I see a tint of blue in the cere already, and it seems photos bring out the color. I saw this same thing with both my males.
What a cute bird - I also like the idea of Pepsi as the name - works for boy or girl and goes so well with Sprite [same company inspiration I think].
It is hard to say if Pepsi is a boy or girl - just before they have their first molt it can be really hard to decide. I think Pepsi is a girl tho - cause of the 1st photo shows the cere as kind of pearly [white/blue] instead of pink/purple/blue.
Keep us updated.
Your flock is lovely. Sprite is gorgeous & so is your Tiel.