<<Disclaimer: Verify this information before applying it to your situation.>>

I received 10 replies about GF chips. Most people stated
that the plain variety chips were usually GF whereas the
flavored may not be GF.

5 people recommended Plain Baked Lays or Low-Fat Lays

3 people cited Ruffles and low-fat Ruffles

1 person each mentioned Michael's low fat chips, Herr's
and Tim's Cascade Style in the Idaho area.

Another person sent a whole list of snack food that was GF
including:

<<<Hostess provides  G-F list and Ruffles(regular) is on it,
as well as Cheetos Twists, Fritos Scoops(plain), Munchos regular,
Nacho grande(regular) and Tostitos.
Their # is:  Hostess/Frito Lay  1 800 376 2257 *

Humpty Dumpty also provides a list.
Some things are Doodles Ched-a-Corn, and Corn Puffs.
Mexitos regular, ranch and restaurant style.
Also they have a Small Fry line which includes:
Cheese Sticks, Regular, Salt & Vinegar and Ketchup chips.
Their # is:
Humpty Dumpty/Small Fries 1 800 361 8998 1 800 425 2447 *>>>

Thanks to everyone for the great feedback!
Sigrid