preheat oven 45 degrees lightly oil heavy rimmed baking sheet, place chicken on sheet season w/ salt and pepper, place in heated oven 15 min.
rinsed artichokes under warm water, seperate them and allow to thaw (doesn't matter if not all the way). Thinly slice 1/2 lemon and juice half. With 4 tsp of lemon juice whisk w/ 3 Tbs and season w/ salt and pepper.
place artichokes, potatoes, thyme, and lemon slices, 1/4 cup olive oil, and 1 Tsp of salt and pepper with chicken.