Mix the starter ingredients until well combined. Cover and let rest overnight at room temperature, ideally 65°F to 75°F, until bubbly.
Combine all dough ingredients, including the starter. Mix and knead into a smooth, soft dough, adding up to 2 tablespoons additional water if needed.
Place in a lightly greased bowl, cover, and let rise until nearly doubled, about 1 1/2 to 2 hours.
Gently deflate and pat or stretch into a roughly 9 x 12-inch, 3/4-inch-thick rectangle. Spritz with water or brush with garlic oil, then sprinkle with cheese and optional Pizza Seasoning.
Roll up from a long side into a log and pinch the seam and ends closed.
Place seam-side down, cover, and let rise until puffy, about 1 to 1 1/2 hours. Near the end of the rise, preheat oven to 425°F.
Cut crosswise into four mini-loaves, or in half for two larger loaves. Place cut-side up on lightly greased or parchment-lined baking sheets and spritz with warm water.
Bake mini-loaves 25 to 35 minutes, or larger loaves 35 to 40 minutes, until the cheese is melted and the loaves are deep golden brown.