Question about multiple adjectives

I know there are better options for self study besides Duolingo, but it works decently well for me, combined with other resources, but i was doing a lesson and I'm not quite sure what about my first attempt at the sentence was wrong.

このピザやはですね。

My first attempt was:
このピザやは安いでしずかですね。

However, it said it was wrong, but my next try was correct:
このピザやはしずかで安いですね。

Why did しずか have to come before 安い?

by kentagram

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