Quetiapine, like most other atypical antipsychotics, can cause what is called tachycardia which means rapid heart beats, and can lead to angina (i.e. chest pains).
Really bad anxiety or restlessness can be an indication of akathisia, which is another common side effect of antipsychotic drugs.
You can always speak to your doctor if the chest pain gets too severe, and he/ she might prescribe you medications for angina such as beta-blockers (e.g. Atenolol) and calcium channel blockers (e.g. Amlodipine), but this sort of severity is rare.
Hope this helps.
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