My daughter gets picky every once in a while, back and fowrd.
Luckly she always have at least one or two veggies that she likes even in those times and she have them day and night during those times.
What have work for me is:
-Keep offering new veggies, one of those days she was picky I had raw spinach salad for us, I never thought she would like it because she was so picky and my older hated spinach but I gave it to her anyway just in case, she eat it!!
-I am not too into hiding all veggies just because I think I am letting her believe that she can not eat them if she just try hard enough. So I always make her eat at least one veggie per day (lucky forcing in this case is just keep saying:"Yes, you have to" and "Good job!" whit each spoon she eats.
-Since she already eat at least one veggie even if she didn't want to, then I do hide the rest of them in food she likes. In her mind she only made the sacrifice to eat "one" veggies but she got 3, lol. My favorites hidings are: spaghetti, cheese quesadillas, and creamy veggie soups.
Hope this work for you too.