It’s been right there on the label for more than 30 years. Healthy Choice frozen meals and entrees have been a go-to for people in a rush who want to eat something convenient but seemingly good for them. Chicken parm, sweet and sour chicken — microwaves around the country are humming with them right now. The brand represents 60 percent of sales of all products labeled as “healthy” in the market today, with more than 200 million meals sold last year.