Can you have an allergic reaction to paprika if you have tree nut allergy?

Patients with tree nut allergies do not typically react to paprika. Paprika allergy is primarily associated with the celery-birch-mugwort-spice syndrome, where cross-reactivity occurs through pathogenesis-related proteins (PR-10), and profilins shared with birch and mugwort pollen, rather than throu...

Yes - according to a paper published, there is significant cross-reactivity between chili peppers and Brazil nut and hazelnut at least in laboratory assays, however clinical reactivity was not correlated in this paper (Ivens et al., PMID 34714660):

"The xMAP food allergen detection assay (xMAP FADA) ...