Chicken looks "off"? Could this be poisoning? PLEASE HELP!!!!

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She's not her normal self today. She walks slowly, she can run, but she doesn't want to, and prefers to stand and in a corner semi-hunched up, sometimes with her eyes closed, sometimes not. She didn't talk at all today, at least during the time I was home. She laid an egg earlier this morning, so I'm sure it's not a reproductive ptoblem. However, my mom did say that my next door neighbors had hired bug exterminators and they were spraying their stuff around. Does this sound like poisoning? She was fine yesterday. She eats, but only her favorite treats so far. Crop looks normal. My other chicken doesn't display any of these symptoms. WHAT COULD THIS BE? HELP!!!

 

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Okay, she's scratching in the dirt with her sister now, but she still looks kind of off. Anyone please?
Also forgot to mention that my mom didn't put out the waterer while i was at school today, so she may or may not hve gone into the coop to get a drink.

 

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Her crop feels a bit squishy, actually. Could it be impacted/sour crop?

 

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I just found that they'd eaten part of a spaghetti sauce bottle wrapper, too. Could this also br why?

 

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I went to check on them this evening and she seemed a lot better, thankfully. Still, anyone?

 

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Okay, she's completely normal today.

I felt her crop in the morning and it was emptied, which means no crop problems, thankfully.
She hasn't laid an egg yet, but I'm pretty sure she will later in the day. Her comb and wattles are a bit reddish-orangish today, though. Any thoughts on what happened yesterday?