Is my kitten eating enough

Samson is 3 1/2 months old, so he isnt a tiny kitten. But he doesnt seem to eat much, I filled his bowl on friday evening, dried kitten food, the same type he was used to, and he has only just gotten half way through it now... Im worried he isnt eating enough for a growing kitten. I wish i measured how much Id put in instead of just tipping it out.

At his age how much is he supposed to be eating, ill measure it next time and make sure he is ok

Check the bag and see what it recommends for his age and weight. Is it a dry kitten food, specifically?

If he's starting to lose baby teeth he might eat slower because it kind of hurts. When my puppy was doing that I moistened her dry food a bit and she ate more.