han & chicks outdoor potted plants 3+years old

Question

3+years old not producing new growth or flowering zone 9b texas

Answer 1

Hen and chicks plants don't flower every year, in fact they flower at the end of their life at approximately 3 years old. So if yours flowered last year, the older plants have probably died, and the patch may be re-establishing itself from the younger "chick" plants:
https://www.gardeningknowhow.com/ornamental/cacti-succulents/hens-chicks/hens-and-chicks-flowers.htm

If the "chicks" are slow to establish themselves, you may need to fill in the patch with more seeds.