For the most part, if a bird doesn't look frizzled, they aren't. However, there is/has been talk of a modifier gene. Where the chicken will appear to be smooth or mostly smooth and throw frizzle chicks. I think I may be seeing something like that for the first time this year. I've been breeding Sizzles for a while, and one of my last hatches produced something odd. A smooth blue chick with what appears to be one slightly frizzled feather on one of its wings. I've been keeping an eye on that chick, waiting for that feather to right itself and it hasn't. I plan on pairing it up separately with another smooth Sizzle or a Silkie to see if it produces frizzled chicks when its old enough to breed. I took a picture of it when it was about a week old. I'll see if I can find that picture and I'll share it here.
The best way to get chicks from your hen would be to breed her to a smooth roo. You'll get about 50/50 that way, but you'll avoid chicks that have two copies of the frizzle gene (frazzles/curlies).
The hen has been paired with a smooth feathered rooster and every chick has been smooth feathered. My inquiry is the result of seeing pictures of birds with only a few frizzled feathers and reading sites that mention the possibility of smooth feathered chickens producing frizzled chicks. A recessive gene? From what I am reading "frizzle" seems to be a topic not well understood. Thank you for your response. I would be most interested in seeing a picture of your blue chick.