According to this Grub Street article, the answer is yes.
And, they speculate on causes in the slow-down on restaurant spending:
I’m a little skeptical of these data? Why? Well, here’s data from the Bureau of Economic Analysis (BEA) data on personal consumption expenditures (these are the data that feed into calculation of GDP) for food at home and away from home.
In inflation-adjusted terms, all consumer spending is up about 36% since 2001. Spending on food at home only rose about 24% over this time periods, but spending away from home increased 54%. (I’ve also shown spending on clothing for reference). Spending on food away from home fell during the Great Recession, but it has significantly rebounded since.
Now, it’s not impossible for both of these statistics to be simultaneously true - one can eat out less frequently but spend more money on each trip, and total expenditures could still rise.
But, the BEA also reports quantity indices, which provide an estimate of the volume of food sold away from home. Here are those data. These data suggest little evidence for a slowdown in the amount of food consumed away from home.
The headline on the Grub Street article asks “Should Restaurants be Worried?” The BEA data suggest the answer is “no.”