As your LO gets older, food preferences will change constantly. It's hard to keep up! I really believe that the key to maintaining your sanity is to stay one step ahead. Combining foods to give them a different taste is one of the easiest ways to do this. I gag at the thought of some things Tyler ate...when he refused plain baby cereal, I mixed in fruit juice. When that got old, I added some jarred mixed veggies. It looked nasty but he loved it and ate that combo for months.
IMHO, you aren't creating a picky eater. It's possible to encourage pickiness in older babies and toddlers, but not so much at that age.