Possibly. There's supposedly the thinking too much sleep affects lifespan or something like that, not sure if the thinking is dound enough, and strage runblings that 8 hours is too long and 3-4 is optimum.
I know I could get 3-4 hours sleep, it's even been know on rare occasions, but within a week I think I'd probably be knackered, sluggish, and functioning below an acceptable waking capacity.
The only problem sleeping after meals will do is
Lower Bloodsugar depending on the length, and possibly store calories from havign a lowered Heartrate / Metabolism.
Though unless you overate, or had too much junk, calorie storage mostly from excess wouldn't really be a problem.
Plus sleeping releases GH, first two hours only, which could be considered more Anabolic, if you persay had 5-6 hours sleep, and napped throughout the day, compared to having 8 hours stright, but as a counter argument, I don't think it holds enough weight ot make it worthy of doing, even for potentiallya slightly greater GH production daily.
If you're sleeping is a bit problematic, you could try his.
Cut Carbs a bit before sleep and either replace the calories with some Fats or Protein. See if that has any effect. Oh and if you're not already, give yourself 1-2 hours beforehand, don't just eat then sleep. Let the digestive processes kickstart first, so you're not getting as much Carb processing during sleeptime.
Sometimes Carbs can disrupt sleep patterns, though it's not generally bandied about as being a common thing, (I haven't seen anything conclusive, to show it's a common problem, carbs before sleep), I certainly get no problems having Carbs before sleeptime, and never have.