Preheat oven to 425 degrees.
Brush oil onto cookie sheet.
Press pizza dough into cookie sheet. Top with chicken and cheese.
Bake 16-18 minutes until crust is golden brown. Let cool.
Slice tomatoes and remove seeds. Dice tomatoes, avocado and onion; put in bowl. Toss with juice of lemon.
Spread over pizza. Sprinkle bacon over top. Cut into squares and serve.