Brown chorizo in a skillet over medium-high heat. Drain onto paper towels.
In a bowl, mix sour cream, mayonnaise, lime juice, chili powder and salt until well combined. Taste and adjust seasonings, adding more lime juice or chili powder, or water to thin if desired.
Lightly grease a pizza pan and roll out pizza dough on top. Brush olive oil on top of dough, then spread sour cream mixture on top. Layer on the mozzarella, chorizo, corn. and jalapeños. Sprinkle cotija over the top.
Bake pizza for 12-15 minutes, until crust is browned and mozzarella is melted. Garnish with fresh cilantro.