It's important to note that the order of games can be a little confusing because they were released in different series and some games came out in between others.
Here's the order of the main Papa Louie restaurant series:
1. Papa's Pizzeria
2. Papa's Burgeria
3. Papa's Freezeria
4. Papa's Donuteria
5. Papa's Wingeria
6. Papa's Bakeria
7. Papa's Cupcakeria
8. Papa's Pancakeria
9. Papa's Scooperia
10. Papa's Cheeseria
11. Papa's Hot Doggeria
12. Papa's Taco Mia!
13. Papa's Pastaria
14. Papa's Sushiria
15. Papa's Mocharia
16. Papa's Fryeria
There are also side series like To Go!, To Go! 2, and the "My Pizzeria" series, which add to the complexity.
However, if you're looking for the next game directly after Hot Doggeria in terms of the main restaurant series, then it's Papa's Taco Mia!.