In a bowl, combine warm water, sugar, and yeast; let sit for 5 to 10 minutes until foam forms.
Add flour, salt, and olive oil to the yeast mixture and mix until a dough forms.
Knead the dough for 8 to 10 minutes until smooth and elastic.
Cover the dough and let it rise for 1 to 1½ hours until it doubles in size.
Preheat the oven to 425°F (220°C).
Grease a baking or pizza pan, then press the dough into a thick, even layer on the pan.
Let the dough rest on the pan for 10 minutes.
Spread pizza sauce evenly over the dough.
Sprinkle a portion of mozzarella cheese over the sauce.
Distribute cooked chicken and vegetables evenly over the cheese.
Top with remaining cheese and sprinkle with Italian seasoning, salt, and black pepper.
Bake the pizza for 18 to 22 minutes until the crust is golden and cheese is bubbly.
Allow the pizza to cool slightly before slicing and serving warm.