Mix the orange juice, honey, mustard, thyme and olive oil together in a bowl with a spoon. Next, put the mixture into a saucepan over a high heat and when it starts to boil, turn down the heat and wait for the sauce to reduce by half. Set aside.
Brush the salmon with the olive oil, add some salt and pepper and put it into a hot frying pan with the skin face down and cook quickly on both sides. Serve with the warm sauce you made earlier.