On a lightly floured surface, roll bread dough into a 10-inch circle. Place in a greased 11-inch tart pan with a removable bottom, pressing to fit into pan. Prick crust with a fork. Brush with beaten egg. Bake in a 400-degree F. oven for 12 to 15 minutes or until brown. Transfer to a wire rack (leave oven on).
Meanwhile, in a large skillet heat oil. Stir-fry chicken, onion, sweet pepper, and lemon-pepper seasoning over medium-high heat for 4 to 5 minutes or until chicken is no longer pink and vegetables are crisp-tender. Spread pesto atop the crust. Top with chicken mixture, tomato, and fresh mozzarella.
Bake in a 400-degree F. oven for 10 to 15 minutes or until heated through and cheese is melted. Remove from pan; place on a serving platter. Cut into wedges. Makes 6 servings.