1. Preheat the oven to 400 degrees. Lightly coat a baking sheet with cooking spray. Dust a flat surface with flour and then roll out the pizza dough. Transfer dough to baking sheet and bake 5 minutes.
2. Meanwhile, combine the arugula, the 1/2 cup of basil, 2 garlic cloves and the lemon juice in a food processor. Drizzle in the 1/4 cup of oil and the water; pulse until a thin paste forms. Add the Parmesan, 1/4 teaspoon of the salt and 1/4 tea-spoon of the black pepper; pulse.
3. Heat the remaining olive oil in a large skillet over medium-high heat. Chop the remaining garlic and add it to the skillet with the chard, mushrooms and 1/4 teaspoon each salt and black pepper; saute 3 to 4 minutes until tender.
4. Spread 1/4 cup of pesto on the crust. Top with the vegetable mixture and tomatoes. Season the ricotta with salt and black pepper and add in dollops to the pizza. Bake until crust browns and cheese melts, 20 to 25 minutes. Slice the remaining basil and top pizza with it.