Mix Up The Dressing. In a small bowl, combine mayo, sour cream, mustard, vinegar, pickle juice, garlic powder, salt, and pepper. Whisk until smooth and set aside.
Cook & Cool Pasta. Bring a large pot of water to a boil with a teaspoon of salt. Add the pasta and cook according to package directions, cooking 1 minute longer than al dente. (Gluten-free pasta can get a bit hard when chilled if it's cooked al dente, so you'll want to just slightly over-cook it.) Drain pasta in a colander, rinse briefly with cold water, and add the pasta to a large mixing bowl. Drizzle with olive oil and stir to coat. Let the pasta cool COMPLETELY to room temperature before making your salad.
Combine Salad. When the cooked pasta is completely cool, add bell pepper, celery, red onion, chopped pickles, and boiled eggs. Add the dressing to the salad and stir to coat until the mix-ins are evenly distributed and the noodles are evenly coated in dressing. (At this point, it may look like too much dressing, but it'll keep soaking in. Trust!)
Garnish, Serve & Store. If possible, chill for 30-60 minutes before serving to let the flavors develop. When you're ready to serve, give the salad one more stir, then garnish with paprika. Store leftover pasta salad in an airtight container in the fridge 3-5 days. Keep in mind that the dressing will continue to soak into the noodles as time goes on. If your leftovers are looking a bit dry, add a tiny bit of water (1 teaspoon up to 1 Tablespoon), and give it a stir to rehydrate.