Heat oil in a large skillet. Combine flour and ½ T. seafood seasoning in a zip top plastic bag. Add tilapia. Seal bag, and shake to coat. Add tilapia to oil and cook 4-6 minutes, turning occasionally, until fish is cooked through and easily flakes. Meanwhile, combine yogurt and remaining seafood seasoning and shredded sprouts. Set aside. Layer fish, yogurt mixture, and pickles on buns. Sprinkle with hot sauce, if desired.