Preheat the oven to 180°C.
Grease a 6 hole muffin tin with oil and butter.
Chop the bell pepper into small bits.
Whisk the eggs with the chives and 4 pinches of salt. Season with ground pepper.
Divide the egg mixture between the muffin holes. Drop a few pieces of the chopped peppers into each hole, then crumble some goat's cheese on top - they will sink into the egg mixture.
Put the tin in the oven and bake for about 20 minutes until golden.
Let them cool in the tin (they will collapse a bit) then transfer them to a plate.
Serve warm or at room temperature.