"With your attitude, I would place you closer to a grandfather. We should go before you get even crankier."

Qui-Gon's hand makes its way to Ezra's shoulder so he can guide the boy back into the house. If they left through the front, then they could make it into town and (hopefully) get a better idea of what was going on--including any issues regarding that scrawniness.

He's not too worried, however. Ezra's personality is intact and outside of his height loss, he's perfectly healthy and energetic. There has to be a logical explanation despite the overall whimsical nature of their surroundings. And whatever that issue, they'll be sure to tackle it together like the family they are.