Heat olive oil in a large, deep skillet over medium heat; cook and stir onion and green bell pepper in the hot oil until tender, 5 to 8 minutes. Stir garlic into vegetables and cook until fragrant and softened, about 2 minutes. Stir kielbasa sausage, tomatoes with juice, water, paprika, oregano, thyme, and hot sauce into onion mixture, bring to a boil, and stir in orzo. Reduce heat to low, cover, and simmer until orzo are tender, about 10 minutes.