I'm thinking some sort of sherried chicken........... I have mushrooms,
sherry, garlic, onion and, of course, chicken. I'm thinking I can easily
make something of this, right?

Saute' chicken, deglaze the pan with sherry, add onion, mushrooms, garlic
and be done with it.

Would you add anything else? Thyme? Rosemary? Basil? Oregano? Lemon,
even or capers?

Just throwing some ideas out there. It will be served over pasta with a
side dish of buttery peas.

kili