Cook The Pasta. Bring a large pot of salted water to a boil. Cook the farfalle pasta according to package directions until al dente. Drain and rinse under cold water to cool. Set aside.
Grill The Corn. Preheat the grill to 450°F. Grill the corn, turning occasionally, until charred and cooked through, about 10–12 minutes. Let cool slightly, then cut the kernels off the cobs.
Mix The Dressing. In a large bowl, whisk together the mayo, sour cream, lime juice, lime zest, smoked paprika, chili powder, garlic powder, salt, and pepper until smooth and creamy.
Assemble The Salad. Add the cooked pasta, grilled corn, chopped bacon, cotija cheese, red onion, jalapeño, and cilantro to the bowl with the dressing. Toss until everything is evenly coated.
Add The Avocado. Gently fold in the diced avocado just before serving to keep it from getting mushy. Taste the salad and adjust the seasoning with extra salt, black pepper, or a fresh squeeze of lime, if needed.
Garnish And Serve. Sprinkle with extra cotija, cilantro, and a dusting of Tajin if you like. Serve chilled or at room temperature.