Orange Choc Chips Muffin

1.5 cup flour
1.5 tsp baking powder
1/2 tsp baking soda
1/2 tsp salt
1/2 cup choc chips

1/2 cup butter (melted) * i used canola oil
1/2 cup sugar
45g cream cheese (melted)
1 large egg
1.5 tsp grated orange
3/4 cup orange juice

Bake @ 190 C for 20 minutes