Wrap the bacon and leek in paper towel and cook in the microwave on high for 2 minutes. Dice the bacon.
Combine the zucchini, carrot, cheese, flour, bacon and leek in a large bowl. Stir in the combined eggs, oil and mustard. Mix gently to combine.
Coat a microwave safe quiche dish with cooking spray.
Pour the mixture into the prepared dish and place in the microwave. Cook on 50% power for 15 minutes until the edges are firm and mixture is set, time depends on how powerful your microwave is. Place under a grill for 4-5 minutes or until top is golden and firm.
Serve on top of the baby spinach leaves with a dollop of yoghurt.