I looked through all the chefs and I saw that there was no chef that had a round table. Though, there is the barman that has a table which is in a shape of a half circle and is Asian and wears black. I think you mean him? Also, he is available. Also, there is a Spanish chef that makes pasta and he is available too. I think you mean them because there is no one else like how you described them
Yes I have the Asian Chef with the round table and wears black, he is a Japanese Chef and was available in the early days of the game, he makes the same as the regular japanese chef (one used to be called sushi chef). I also have a pasta chef that makes the same stuff as the Italian chef, in the early days he just made the spaghetti and carbonara whereas the italian chef just did pizza, now they do both the same.