Place the warm water in a small bowl. Sprinkle the yeast and 1 tsp. sugar over the top and stir to combine. Set aside until foamy, about 5 minutes. Combine the remaining sugar, the flour and salt in a mixing bowl. Stir in the oil, vanilla and yeast mixture and mix until smooth. Remove the dough to a lightly floured surface and knead until smooth and elastic, about 10 minutes. Place the dough in a bowl spray with non stick spray and cover with towel. Set aside in a warm place to rise until doubled in bulk, about 45 minutes. Punch the dough down and return it to the floured surface. Knead for 2 minutes and place it back in the sprayed bowl. Allow to rest for 20 minutes. Preheat oven to 400 degrees. Roll the dough out into a 12-inch circle and place it on a nonstick pizza pan. Top the dough with the strawberry jam, spreading it evenly over the top, but leaving a 1/2 inch border around the edges. Sprinkle the cheese evenly over the jam. Bake 5 minutes. Remove from the oven and arrange the chopped fruit decoratively over the top. Return to the oven and bake until the crust is golden brown around the edges, an additional 5 minutes. Allow to cool slightly before cutting into 8 pie-shaped wedges.