Ok, my initial disclaimer is this answer is based purely off second-hand or worse knowledge, i.e. Googling. Malacca is definitely on my list of places to get to, but I haven't been there yet so no first-hand knowledge.
There appears to be at least one restaurant that calls out some Chitty influences:
Melaka’s nyonya cuisine derives its flavours from the Malay, Chinese and Chitty communities. Try udang goreng assam (stir-fried prawns in tamarind paste), chicken pongteh (stew) and the telur dadar cincaluk (spicy omelette with fermented shrimp paste).
Ikan assam could be one example of a confirmed Chitty dish at the above restaurant.
Other than that, there's various other Nyonya restaurants that may have some Chitty influences but more commonly are based around Peranakan Chinese cuisine rather than Peranakan Indian.