Grilled Salad Pizza

INGREDIENTS

• 1 package dry yeast (about 2 1/4 teaspoons)
• 2/3 cup warm water (100° to 110°)
• 3 1/2 teaspoons olive oil, divided
• 1 2/3 cups all-purpose flour
• 1 teaspoon sugar
• 1/2 teaspoon salt
• 1/2 teaspoon dried oregano
• 1/4 teaspoon dried thyme
• Cooking spray
• 1/2 cup (2 ounces) shredded part-skim mozzarella cheese, divided
• 1/4 cup (1 ounce) grated fresh Parmesan cheese, divided
• 2 1/2 cups coarsely chopped trimmed arugula (about 4 ounces)
• 1 1/2 cups chopped seeded tomato
• 1/4 cup chopped fresh basil
• 2 teaspoons balsamic vinegar
• 1 1/2 teaspoons Dijon mustard
• 1 (14-ounce) can artichoke hearts, drained and chopped