Chantal Panozzo and her husband followed their primary care doctors’ orders last year after they both turned 45, now the recommended age to start screening for colorectal cancer. They scheduled their first routine colonoscopies a few months apart. Panozzo said she was excited to get a colonoscopy, of all things, because it meant free care. The couple run a business out of their suburban home near Chicago and purchase coverage costing more than $1,400 each month for their family of four on the exchange, which was created by the Affordable Care Act. By law, preventive services — including routin…